{"title":"Engine Wiring Harnesses","description":null,"products":[{"product_id":"wire-harness-for-cam-position-sensor","title":"Chevrolet Performance Cam Position Sensor Wire Harness — Fits LS2 \u0026 GM LS-Series Engines","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Chevrolet Performance Parts\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eChevrolet Performance Parts engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Chevrolet Performance Parts lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/CfRKkHCYk6A\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eRestore Flawless Engine Timing with Chevrolet Performance Cam Sensor Harness\u003c\/h2\u003e\u003cp\u003eEnsure your engine's critical timing functions are operating flawlessly with this genuine \u003cb\u003eChevrolet Performance Cam Position Sensor Wire Harness\u003c\/b\u003e. Specifically designed for \u003cb\u003eLS2 and other GM LS-Series engines\u003c\/b\u003e, this harness provides a reliable and secure connection for your camshaft position sensor. A damaged or degraded harness can lead to intermittent sensor signals, causing engine misfires, reduced performance, and illuminated check engine lights. This OE-quality replacement ensures accurate data transmission for optimal engine management.\u003c\/p\u003e\u003ch3\u003eUncompromised Quality for Critical Engine Signals\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eExact OE Replacement:\u003c\/b\u003e Engineered to match the original factory harness for perfect fitment and electrical compatibility with LS2 and GM LS-Series applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Quality Materials:\u003c\/b\u003e Constructed with durable wiring and connectors to withstand harsh under-hood conditions, including extreme temperatures and vibrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eReliable Signal Transmission:\u003c\/b\u003e Guarantees a clean and consistent signal from the camshaft position sensor to the ECU, crucial for precise ignition and fuel injection timing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrevents Engine Issues:\u003c\/b\u003e A properly functioning harness helps avoid common problems like rough idle, stalling, poor fuel economy, and diagnostic trouble codes related to cam timing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEasy Installation:\u003c\/b\u003e Designed for a direct plug-and-play replacement, simplifying the repair process for mechanics and DIYers alike.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Foundation of Engine Control\u003c\/h3\u003e\u003cp\u003eThe camshaft position sensor is a vital component in modern engine management, providing the ECU with information about the camshaft's rotational position. The integrity of its wiring harness is paramount for this data to be accurately transmitted. This Chevrolet Performance harness eliminates potential signal interference, allowing your LS2 or other LS-Series engine to run smoothly, efficiently, and powerfully. Don't let a faulty harness compromise your engine's performance.\u003c\/p\u003e\u003cp\u003eFor reliable electrical components that meet the highest standards, choose GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Chevrolet Performance Parts products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/flywheel-dowel-locating-pin\" style=\"color:#0066cc;text-decoration:none;\"\u003eChevrolet Performance Flywheel Dowel Locating Pin 0.437in x 0.875in — Fits GM Engines\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/valve-cover-gasket-1\" style=\"color:#0066cc;text-decoration:none;\"\u003eChevrolet Performance Valve Cover Gasket - Small Block Chevy Rubber 0.177in Thick\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/valve-cover-screw-sbc-w-center-bolt-covers\" style=\"color:#0066cc;text-decoration:none;\"\u003eChevrolet Performance Valve Cover Bolt 1\/4-20 x 3-5\/8in — Fits SBC Center Bolt Covers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sbc-hyd-roller-camshaft\" style=\"color:#0066cc;text-decoration:none;\"\u003eChevrolet Performance SBC Hydraulic Roller Camshaft - 0.474\/0.510 Lift\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/valve-spring-shim-lt4\" style=\"color:#0066cc;text-decoration:none;\"\u003eChevrolet Performance Valve Spring Shim 0.035in Thick — Fits 1992-97 GM LT-Series\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Chevrolet Performance Cam Position Sensor Wire Harness \\u2014 Fits LS2 \u0026 GM LS-Series Engines\",\"description\":\"Replace your worn LS2 or GM LS-Series cam position sensor wire harness with this genuine Chevrolet Performance part. Ensure accurate engine timing and prevent misfires. Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Chevrolet Performance Parts\"},\"mpn\":\"12627501\",\"url\":\"https:\/\/ggcracing.com\/products\/wire-harness-for-cam-position-sensor\",\"offers\":{\"@type\":\"Offer\",\"price\":\"46.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/wire-harness-for-cam-position-sensor\",\"sku\":\"FMQX_12627501\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Chevrolet Performance Parts\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Chevrolet+Performance+Parts\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Chevrolet Performance Cam Position Sensor Wire Harness \\u2014 Fits LS2 \u0026 GM LS-Series Engines\",\"item\":\"https:\/\/ggcracing.com\/products\/wire-harness-for-cam-position-sensor\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Chevrolet Performance Cam Position Sensor Wire Harness \\u2014 Fits LS2 \u0026 GM LS-Series fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Chevrolet Performance Parts?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Chevrolet Performance Cam Position Sensor Wire Harness \\u2014 Fits LS2 \u0026 GM LS-Series?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Chevrolet Performance Parts","offers":[{"title":"Default Title","offer_id":40868377952340,"sku":"FMQX_12627501","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/GMP12627501.jpg?v=1714294709"},{"product_id":"crank-cam-ignition-harness","title":"Holley EFI Crank\/Cam Ignition Harness — Universal HP and Dominator EFI","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/jFU4TR7ONGk\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003ePrecision Timing with Holley EFI Crank\/Cam Ignition Harness\u003c\/h2\u003e\u003cp\u003eThe Holley EFI Crank\/Cam Ignition Harness is a critical component for any high-performance engine management setup using Holley HP or Dominator EFI systems. This harness is designed to provide a clean, interference-free signal from your crankshaft and camshaft sensors to the ECU. Accurate timing is the foundation of engine performance and longevity, and this harness ensures that your ignition system operates with the precision required for high-horsepower builds.\u003c\/p\u003e\u003ch3\u003eTechnical Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specifically designed for Holley HP and Dominator EFI systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Connects crank and cam sensors for precise ignition timing and sequential fuel injection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e High-grade wiring and connectors designed to withstand harsh engine bay environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatility:\u003c\/strong\u003e Universal design allows for integration into a wide variety of custom engine builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Minimizes signal noise to prevent timing errors and engine misfires.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhen building a custom EFI system, the quality of your wiring harness can make the difference between a smooth-running engine and constant troubleshooting. This harness is built to the highest standards, ensuring that your ECU receives accurate data for every revolution. Whether you are running a stock engine or a full-blown race motor, reliable sensor signals are non-negotiable. Trust this Holley EFI harness to keep your timing locked in and your engine running at its peak potential. Find all your essential engine management wiring and components at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Crank\/Cam Ignition Harness \\u2014 Universal HP and Dominator EFI\",\"description\":\"Ensure precise ignition timing with the Holley EFI Crank\/Cam Ignition Harness. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Crank\/Cam Ignition Harness \\u2014 Universal HP and Dominator EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/5HE0tm1E5Ow\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eReliable Power Distribution for Dominator EFI\u003c\/h2\u003e\u003cp\u003eThe Holley EFI 558-308 main power harness is a critical component for any Dominator EFI installation. Providing a clean, stable power source is the foundation of a reliable engine management system. This harness is engineered to deliver consistent voltage to your ECU, preventing the common electrical issues that can lead to misfires, sensor errors, or system resets during high-performance operation.\u003c\/p\u003e\u003ch3\u003eKey Features for Stable Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Power Delivery:\u003c\/strong\u003e Designed to handle the high current demands of the Dominator EFI system without voltage drops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Features high-gauge wiring and robust connectors to withstand the rigors of the engine bay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Grounding:\u003c\/strong\u003e Includes proper grounding points to ensure a noise-free electrical environment for your sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Fitment:\u003c\/strong\u003e Engineered specifically for the Dominator EFI platform for a straightforward, hassle-free installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eElectrical stability is often overlooked, but it is the most important factor in maintaining consistent engine performance. The 558-308 power harness ensures that your ECU receives the steady current it needs to process complex data and control your engine's fueling and ignition with pinpoint accuracy. Don't risk your engine's health with inferior wiring; invest in the quality and reliability of genuine Holley components. For all your EFI power and wiring needs, count on the experts at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI 558-308 Main Power Harness \\u2014 Dominator EFI Power Distribution\",\"description\":\"Ensure stable power for your Dominator EFI with the Holley 558-308 main power harness. 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Shop GGCRACING today!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-308\",\"url\":\"https:\/\/ggcracing.com\/products\/efi-main-power-harness\",\"offers\":{\"@type\":\"Offer\",\"price\":\"106.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/efi-main-power-harness\",\"sku\":\"GVMR_558-308\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI 558-308 Main Power Harness \\u2014 Dominator EFI Power Distribution\",\"item\":\"https:\/\/ggcracing.com\/products\/efi-main-power-harness\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI 558-308 Main Power Harness \\u2014 Dominator EFI Power Distribution fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI 558-308 Main Power Harness \\u2014 Dominator EFI Power Distribution?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880334602324,"sku":"GVMR_558-308","price":99.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-308.jpg?v=1714509311"},{"product_id":"flying-lead-main-harness","title":"Holley EFI Flying Lead Main Harness — 15ft Universal Crimped","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/CiFGFNaz3Zc\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eCustom EFI Wiring with the Holley EFI 15ft Flying Lead Main Harness\u003c\/h2\u003e\u003cp\u003eTake full control of your custom engine management system with the Holley EFI Flying Lead Main Harness (MPN: 558-126). This universal 15-foot harness provides the ultimate flexibility for builders and tuners creating bespoke EFI setups. Unlike pre-terminated harnesses, the flying lead design offers crimped ends, allowing you to cut to length and terminate each wire precisely to your specific sensors, injectors, and other components, ensuring a perfectly tailored and optimized wiring solution for any application.\u003c\/p\u003e\u003ch3\u003eUnmatched Versatility for Custom Builds\u003c\/h3\u003e\u003cp\u003eThe Holley EFI Flying Lead Harness is an indispensable tool for complex engine swaps, standalone EFI conversions, or highly customized projects where off-the-shelf harnesses simply won't suffice. Its generous 15-foot length provides ample reach for routing wires cleanly and efficiently throughout your vehicle, minimizing clutter and potential interference. Each wire is clearly identified, simplifying the termination process and ensuring accurate connections, which is critical for the reliable operation of your EFI system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eUniversal Application:\u003c\/b\u003e Ideal for custom EFI builds and engine swaps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e15ft Length:\u003c\/b\u003e Ample wiring for flexible routing and component placement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCrimped Ends:\u003c\/b\u003e Ready for custom termination to specific connectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Quality Wire:\u003c\/b\u003e Ensures reliable signal and power transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaximum Customization:\u003c\/b\u003e Tailor your EFI wiring precisely to your needs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor those who demand complete control over their vehicle's electrical system, the Holley EFI Flying Lead Main Harness is the foundation for a professional-grade custom EFI installation. Build your dream setup with confidence, knowing you have the flexibility and quality needed for peak performance. Explore all Holley EFI components at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Flying Lead Main Harness \\u2014 15ft Universal Crimped\",\"description\":\"Build custom EFI wiring with the Holley EFI 15ft Flying Lead Main Harness. Universal, crimped, and ready for your custom project. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eBridge the Gap: Holley EFI MAP Sensor Adapter for LS1\/LS2 to LS3\u003c\/h2\u003e\u003cp\u003eFacilitate a smooth and reliable connection when upgrading your LS engine's MAP sensor with the \u003cb\u003eHolley EFI MAP Sensor Adapter\u003c\/b\u003e. This essential wiring harness adapter is specifically designed to allow the use of a modern \u003cb\u003eLS3 MAP sensor with an LS1 or LS2 main wiring harness\u003c\/b\u003e. Perfect for those performing LS swaps or upgrading their existing LS platform, this adapter eliminates the need for complex wiring modifications, ensuring a plug-and-play solution.\u003c\/p\u003e\u003ch3\u003eSeamless Integration \u0026amp; Reliable Performance\u003c\/h3\u003e\u003cp\u003eWhen transitioning to an LS3 intake manifold or simply seeking the improved accuracy of an LS3 MAP sensor, this adapter is indispensable. It provides the correct electrical interface, maintaining signal integrity and ensuring your engine's ECU receives accurate manifold absolute pressure readings. This precision is critical for optimal fuel mapping and ignition timing, directly impacting engine performance and efficiency.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFunction:\u003c\/b\u003e Adapts LS1\/LS2 main harness to accept an LS3 MAP sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e Designed for GM LS1, LS2, and LS3 engine platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInstallation:\u003c\/b\u003e Plug-and-play design for straightforward integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBenefit:\u003c\/b\u003e Enables use of more accurate LS3 MAP sensors with older harnesses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConstruction:\u003c\/b\u003e High-quality wiring for reliable electrical connections.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEssential for LS Swaps and Upgrades\u003c\/h3\u003e\u003cp\u003eAvoid the headaches of custom wiring and potential electrical issues. The Holley EFI MAP Sensor Adapter is a professional-grade solution that ensures your engine management system functions flawlessly. Whether you're chasing more horsepower or simply enhancing reliability, this adapter is a small but critical component for any serious LS build. Get your essential wiring solutions from GGCRACING.COM.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI MAP Sensor Adapter \\u2014 LS1 \u0026 LS2 to LS3 Harness\",\"description\":\"Seamlessly connect an LS3 MAP sensor to your LS1\/LS2 main harness with the Holley EFI adapter. Essential for LS swaps \u0026 upgrades. Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-416\",\"url\":\"https:\/\/ggcracing.com\/products\/map-sensor-adapter-ls1-ls2-to-ls3\",\"offers\":{\"@type\":\"Offer\",\"price\":\"41.22\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/map-sensor-adapter-ls1-ls2-to-ls3\",\"sku\":\"GVMR_558-416\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI MAP Sensor Adapter \\u2014 LS1 \u0026 LS2 to LS3 Harness\",\"item\":\"https:\/\/ggcracing.com\/products\/map-sensor-adapter-ls1-ls2-to-ls3\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI MAP Sensor Adapter \\u2014 LS1 \u0026 LS2 to LS3 Harness fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI MAP Sensor Adapter \\u2014 LS1 \u0026 LS2 to LS3 Harness?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880354754644,"sku":"GVMR_558-416","price":38.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-416.jpg?v=1714509955"},{"product_id":"sub-harness-mopar-gen-3-hemi-vvt-srv","title":"Holley EFI Sub-Harness for Mopar Gen-3 Hemi VVT \u0026 SRV","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAdvanced Control for Mopar Gen-3 Hemi Engines\u003c\/h2\u003e\u003cp\u003eUnlock the full potential of your Mopar Gen-3 Hemi with the Holley EFI Sub-Harness designed for Variable Valve Timing (VVT) and Short Runner Valve (SRV) control. This sub-harness is specifically engineered to integrate with the Terminator X system, providing the necessary connections to manage modern engine features for increased power and efficiency.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Integration:\u003c\/strong\u003e Designed to plug directly into the Terminator X harness for a clean, factory-style installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVVT \u0026amp; SRV Support:\u003c\/strong\u003e Enables full control over variable valve timing and short runner valve systems, essential for optimizing torque curves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Wiring:\u003c\/strong\u003e Constructed with automotive-grade wire and connectors to ensure reliable signal transmission in demanding environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Specific:\u003c\/strong\u003e Tailored for Mopar Gen-3 Hemi engines, ensuring compatibility with factory sensors and actuators.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eManaging VVT and SRV systems is crucial for getting the most out of a modern Hemi engine. This sub-harness simplifies the installation process, allowing you to take advantage of advanced tuning strategies without complex custom wiring. By maintaining precise control over valve timing and intake runner length, you can significantly improve both low-end torque and high-RPM horsepower. Ensure your engine management system is up to the task with this specialized harness from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Sub-Harness for Mopar Gen-3 Hemi VVT \u0026 SRV\",\"description\":\"Optimize your Mopar Gen-3 Hemi with the Holley EFI VVT \u0026 SRV Sub-Harness. Designed for Terminator X systems. Get yours today at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-132\",\"url\":\"https:\/\/ggcracing.com\/products\/sub-harness-mopar-gen-3-hemi-vvt-srv\",\"offers\":{\"@type\":\"Offer\",\"price\":\"167.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/sub-harness-mopar-gen-3-hemi-vvt-srv\",\"sku\":\"GVMR_558-132\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI Sub-Harness for Mopar Gen-3 Hemi VVT \u0026 SRV\",\"item\":\"https:\/\/ggcracing.com\/products\/sub-harness-mopar-gen-3-hemi-vvt-srv\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI Sub-Harness for Mopar Gen-3 Hemi VVT \u0026 SRV fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Sub-Harness for Mopar Gen-3 Hemi VVT \u0026 SRV?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880354787412,"sku":"GVMR_558-132","price":156.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-132.jpg?v=1714509964"},{"product_id":"j2b-auxiliary-harness-kit","title":"Holley EFI J2B Auxiliary Harness Kit — Dominator EFI Universal","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-m1wkAXWjv8\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eUnlock Your Dominator's Potential\u003c\/h2\u003e\u003cp\u003eThe Holley EFI J2B Auxiliary Harness Kit (558-402) is a must-have for users looking to expand the I\/O capabilities of their Dominator EFI system. This harness provides the necessary connections to utilize additional sensors, switches, and actuators, allowing for advanced control strategies like boost control, nitrous stages, or custom data logging. Designed for seamless integration with the Dominator ECU, this harness simplifies the wiring process for complex engine management setups.\u003c\/p\u003e\u003ch3\u003eAdvanced Wiring Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned for Holley Dominator EFI systems\u003c\/li\u003e\n\u003cli\u003eProvides access to J2B auxiliary pins\u003c\/li\u003e\n\u003cli\u003eHigh-quality wiring and factory-style connectors\u003c\/li\u003e\n\u003cli\u003eSimplifies custom sensor and actuator integration\u003c\/li\u003e\n\u003cli\u003eEssential for advanced tuning and data logging\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are adding a transbrake, a bump box, or multi-stage nitrous control, the J2B auxiliary harness provides the clean, reliable signal path required for precise ECU operation. The harness is constructed with high-quality, heat-resistant wiring and factory-spec connectors to ensure long-term durability in the demanding environment of a race car engine bay. By using this dedicated harness, you avoid the mess of splicing into the main engine harness, which can lead to signal interference and troubleshooting headaches. This kit is the professional solution for racers who need to maximize the functionality of their Dominator EFI. Take control of your engine management and push your performance to the next level with the right wiring solutions from GGCRACING.\n\u003c\/p\u003e\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI J2B Auxiliary Harness Kit \\u2014 Dominator EFI Universal\",\"description\":\"Expand your Holley Dominator EFI capabilities with the J2B Auxiliary Harness Kit. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI J2B Auxiliary Harness Kit \\u2014 Dominator EFI Universal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880355311700,"sku":"GVMR_558-402","price":168.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-402.jpg?v=1714510075"},{"product_id":"auxiliary-harness-j2a-connector","title":"Holley EFI J2A Auxiliary Harness Kit — Dominator EFI Universal","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-m1wkAXWjv8\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eExpand Your ECU Capabilities\u003c\/h2\u003e\u003cp\u003eThe Holley EFI J2A Auxiliary Harness Kit (558-401) is designed to give you full access to the auxiliary inputs and outputs of your Holley Dominator EFI system. As your build evolves and you require more control over your engine's peripherals—such as electric fans, fuel pumps, or advanced sensor monitoring—this harness provides the clean, organized connection point you need. It is an essential upgrade for any serious tuner or engine builder looking to take full advantage of the Dominator's powerful feature set.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Harness\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDedicated J2A connector for Dominator EFI\u003c\/li\u003e\n\u003cli\u003eHigh-quality wiring for maximum signal integrity\u003c\/li\u003e\n\u003cli\u003eSimplifies the addition of custom I\/O\u003c\/li\u003e\n\u003cli\u003eFactory-style connectors for a reliable, plug-and-play feel\u003c\/li\u003e\n\u003cli\u003eIdeal for complex racing and street-strip builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWiring can often be the most challenging part of an EFI installation. The J2A auxiliary harness eliminates the guesswork by providing a pre-terminated solution that connects directly to your ECU. This not only saves time during the installation process but also ensures that your connections are secure and resistant to the vibrations and heat of the engine bay. By utilizing the auxiliary pins on the J2A connector, you can implement sophisticated control strategies that were previously unavailable. Whether you are managing a complex turbo setup or simply want better control over your vehicle's cooling and fuel systems, this harness is the reliable choice. Trust in the quality of Holley EFI components to keep your engine running perfectly under any conditions. Find all your essential wiring needs at GGCRACING.\n\u003c\/p\u003e\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI J2A Auxiliary Harness Kit \\u2014 Dominator EFI Universal\",\"description\":\"Upgrade your Holley Dominator EFI with the J2A Auxiliary Harness. Perfect for adding custom inputs and outputs. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI J2A Auxiliary Harness Kit \\u2014 Dominator EFI Universal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880355344468,"sku":"GVMR_558-401","price":217.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-401.jpg?v=1714510084"},{"product_id":"j1a-b-input-output-connector","title":"Holley EFI J1A\/B Input\/Output Connector — Wiring Harness Component","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/jpVqwkEzX34\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003ePrecision Wiring for Holley Dominator EFI\u003c\/h2\u003e\u003cp\u003eThe Holley EFI J1A\/B Input\/Output Connector is an essential component for enthusiasts looking to expand the capabilities of their Dominator EFI systems. Designed for seamless integration, this connector allows for reliable signal routing, ensuring your engine management system operates with peak efficiency. Whether you are building a custom wiring harness or upgrading existing sensors, this high-quality connector provides the durability needed for high-performance automotive environments.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect fit for Holley Dominator EFI J1A\/B ports\u003c\/li\u003e\n\u003cli\u003eHigh-grade materials for long-term electrical reliability\u003c\/li\u003e\n\u003cli\u003eSimplifies complex wiring projects for custom builds\u003c\/li\u003e\n\u003cli\u003eEnsures secure connections under high-vibration conditions\u003c\/li\u003e\n\u003cli\u003eEssential for adding auxiliary sensors and inputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eProper wiring is the backbone of any performance engine build. By utilizing authentic Holley components, you eliminate the risk of signal interference and intermittent connection issues that plague inferior aftermarket connectors. This unit is engineered to meet strict factory specifications, providing peace of mind during track days or street driving. If you are looking to optimize your data logging or expand your EFI input capabilities, this connector is the professional choice for your setup. Find all your high-performance wiring needs at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI J1A\/B Input\/Output Connector \\u2014 Wiring Harness Component\",\"description\":\"Upgrade your wiring setup with the Holley EFI J1A\/B Input\/Output Connector. Ensure reliable signal transmission for your Dominator EFI. Shop now at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-400\",\"url\":\"https:\/\/ggcracing.com\/products\/j1a-b-input-output-connector\",\"offers\":{\"@type\":\"Offer\",\"price\":\"130.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/j1a-b-input-output-connector\",\"sku\":\"GVMR_558-400\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI J1A\/B Input\/Output Connector \\u2014 Wiring Harness Component\",\"item\":\"https:\/\/ggcracing.com\/products\/j1a-b-input-output-connector\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI J1A\/B Input\/Output Connector \\u2014 Wiring Harness Component fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI J1A\/B Input\/Output Connector \\u2014 Wiring Harness Component?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880355377236,"sku":"GVMR_558-400","price":122.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-400.jpg?v=1714510092"},{"product_id":"wire-harness-ls-to-ss-map-adapter","title":"Holley EFI LS to SS MAP Sensor Adapter Harness — Fits GM LS-Series","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/aT7EJBBoPPM\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eSeamless Sensor Integration for GM LS Engines\u003c\/h2\u003e\u003cp\u003eUpgrade your engine management system with the Holley EFI LS to SS MAP Adapter Harness. This high-quality wiring solution allows for a plug-and-play connection between Delphi M\/P 3-pin and Delphi GT 3-pin configurations, making it an essential tool for custom LS swaps or sensor upgrades. Avoid the frustration of cutting and splicing factory wiring by using this professional-grade adapter.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnector A: Delphi M\/P 3-Pin\u003c\/li\u003e\n\u003cli\u003eConnector B: Delphi GT 3-Pin\u003c\/li\u003e\n\u003cli\u003eApplication: GM LS-Series Engine Management\u003c\/li\u003e\n\u003cli\u003eHigh-heat resistant insulation for engine bay durability\u003c\/li\u003e\n\u003cli\u003ePlug-and-play design for quick, reliable installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are performing a complex engine swap or simply replacing a faulty sensor, this adapter harness ensures a secure, weather-tight connection that maintains signal integrity. Built to withstand the harsh environment of an engine bay, this harness provides peace of mind for your fuel injection system. At GGCRACING, we prioritize quality components to ensure your build runs perfectly every time.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI LS to SS MAP Sensor Adapter Harness \\u2014 Fits GM LS-Series\",\"description\":\"Easily connect your sensors with the Holley EFI LS to SS MAP Adapter Harness. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI LS to SS MAP Sensor Adapter Harness \\u2014 Fits GM LS-Series?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880357638228,"sku":"GVMR_558-467","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-467.jpg?v=1714510276"},{"product_id":"7-pin-main-harness-sniper-tbi","title":"Holley EFI 7-Pin Main Power Harness for Sniper TBI Systems — Integrated Fuse \u0026 Fuel Pump Relays","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/g4c9CNUGCsI\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eHolley EFI 7-Pin Main Power Harness for Sniper TBI Systems\u003c\/h2\u003e\u003cp\u003eEnsure robust and reliable power delivery to your Holley Sniper TBI system with the dedicated 7-Pin Main Power Harness. This essential EFI wiring harness is designed to provide all the necessary power connections, featuring integrated fuses and fuel pump relays for a streamlined and secure installation. Eliminating the need for external wiring and complex relay setups, this main harness simplifies the electrical foundation of your Sniper TBI system, allowing for quicker installation and dependable operation. It's the perfect solution for ensuring your Sniper TBI receives consistent, protected power.\u003c\/p\u003e\u003ch3\u003eIntegrated Power \u0026amp; Protection:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated Sniper TBI Fitment:\u003c\/strong\u003e Engineered specifically for Holley Sniper TBI systems, ensuring perfect compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7-Pin Main Connection:\u003c\/strong\u003e Provides a secure and comprehensive power interface for your EFI system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Fuses:\u003c\/strong\u003e Built-in circuit protection safeguards your Sniper TBI and associated components from electrical overloads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Wired Fuel Pump Relays:\u003c\/strong\u003e Simplifies fuel pump wiring, ensuring proper power delivery and protection for your fuel system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction:\u003c\/strong\u003e Made with durable, automotive-grade materials for long-lasting performance and reliability in harsh engine bay environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSimplify Your Sniper TBI Installation\u003c\/h3\u003e\u003cp\u003eThe Holley EFI 7-Pin Main Power Harness is a cornerstone component for any Sniper TBI installation, providing a clean, professional, and safe electrical connection. Its integrated design significantly reduces installation time and potential wiring errors, making it an ideal choice for both professional installers and DIY enthusiasts. With this main harness, you can be confident that your Sniper TBI system has the stable power foundation it needs to deliver optimal fuel injection performance. Trust Holley EFI for superior quality and simplified performance solutions. Shop for all your Holley EFI Sniper TBI needs at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI 7-Pin Main Power Harness for Sniper TBI Systems \\u2014 Integrated Fuse \u0026 Fuel Pump Relays\",\"description\":\"Power your Holley Sniper TBI system reliably with the 7-pin main harness, featuring integrated fuses and fuel pump relays for easy setup.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-490\",\"url\":\"https:\/\/ggcracing.com\/products\/7-pin-main-harness-sniper-tbi\",\"offers\":{\"@type\":\"Offer\",\"price\":\"168.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/7-pin-main-harness-sniper-tbi\",\"sku\":\"GVMR_558-490\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI 7-Pin Main Power Harness for Sniper TBI Systems \\u2014 Integrated Fuse \u0026 Fuel Pump Relays\",\"item\":\"https:\/\/ggcracing.com\/products\/7-pin-main-harness-sniper-tbi\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI 7-Pin Main Power Harness for Sniper TBI Systems \\u2014 Integrated Fuse \u0026 F fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI 7-Pin Main Power Harness for Sniper TBI Systems \\u2014 Integrated Fuse \u0026 F?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880361799764,"sku":"GVMR_558-490","price":157.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-490.jpg?v=1714510314"},{"product_id":"10-pin-harness-sniper-tbi","title":"Holley EFI 10-Pin Input\/Output Wiring Harness - For Sniper TBI EFI Systems","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/nqfByzI6gJE\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eEnsure Flawless EFI Operation with the Holley EFI 10-Pin Input\/Output Harness for Sniper TBI\u003c\/h2\u003e\u003cp\u003eAchieve reliable and precise control over your Holley Sniper TBI EFI system with the dedicated Holley EFI 10-Pin Input\/Output Wiring Harness. This essential component is meticulously engineered to provide robust and secure electrical connections, ensuring seamless communication between your Sniper TBI unit and critical engine sensors and accessories. For optimal performance and troubleshooting, a high-quality wiring harness is non-negotiable, making this Holley EFI solution indispensable for any Sniper TBI installation or upgrade.\u003c\/p\u003e\u003ch3\u003eCritical Connections for Peak Performance\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003e10-pin configuration\u003c\/strong\u003e of this harness is specifically designed to manage the vital input and output signals required by your Holley Sniper TBI system. These connections are crucial for integrating various sensors, relays, and other components that contribute to the overall efficiency and responsiveness of your electronic fuel injection. From sending sensor data to the ECU to controlling auxiliary functions, this harness ensures every signal is transmitted accurately and without interference, preventing common electrical issues that can plague lesser quality wiring. Its robust construction minimizes resistance and maximizes signal integrity, which is paramount for precise fuel delivery and ignition timing.\u003c\/p\u003e\u003ch3\u003eEngineered for Holley Sniper TBI Systems\u003c\/h3\u003e\u003cp\u003eThis wiring harness is not a generic solution; it is purpose-built for \u003cstrong\u003eHolley Sniper EFI TBI systems\u003c\/strong\u003e, guaranteeing perfect compatibility and a straightforward installation process. The connectors are designed to mate perfectly with your Sniper TBI unit, eliminating the need for modifications or unreliable splices. Investing in a genuine Holley EFI harness ensures that your system operates as intended, providing the reliability and performance you expect from Holley's industry-leading fuel injection technology. Whether you're completing a new installation or replacing an aging harness, this 10-pin I\/O solution offers peace of mind and superior functionality.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Benefits:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-Pin Configuration:\u003c\/strong\u003e Specifically designed for critical input\/output signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for Sniper TBI:\u003c\/strong\u003e Guarantees perfect compatibility with Holley Sniper EFI systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction:\u003c\/strong\u003e Ensures reliable and secure electrical connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Integration:\u003c\/strong\u003e Simplifies installation and reduces potential wiring issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced System Reliability:\u003c\/strong\u003e Promotes accurate sensor readings and ECU control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEssential for EFI Operation:\u003c\/strong\u003e A crucial component for optimal fuel injection performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e Holley 558-491\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Trust Holley EFI Wiring?\u003c\/h3\u003e\u003cp\u003eThe integrity of your EFI system hinges on the quality of its wiring. The Holley EFI 10-Pin Input\/Output Harness for Sniper TBI provides the robust, reliable electrical backbone your high-performance engine demands. Avoid costly electrical gremlins and ensure your Sniper TBI system performs at its peak with this purpose-built harness. Secure your connections and optimize your EFI system with confidence, available exclusively at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI 10-Pin Input\/Output Wiring Harness - For Sniper TBI EFI Systems\",\"description\":\"Ensure reliable connections with the Holley EFI 10-Pin Input\/Output Wiring Harness for Sniper TBI systems. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI 10-Pin Input\/Output Wiring Harness - For Sniper TBI EFI Systems?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/JvNevz7p3sw\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eStreamline Your EFI Diagnostics\u003c\/h2\u003e\u003cp\u003eThe Holley EFI Bench-Top Test Harness is an indispensable tool for professional tuners, engine builders, and serious enthusiasts. This harness allows you to power up and communicate with your Holley EFI ECU outside of the vehicle, making it significantly easier to perform software updates, troubleshoot wiring issues, or configure sensor inputs in a controlled environment. By removing the ECU from the vehicle, you can focus on diagnostics without the constraints of the engine bay.\u003c\/p\u003e\u003ch3\u003eProfessional Diagnostic Capabilities\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBench-Top Testing: Safely power and test your ECU on a workbench.\u003c\/li\u003e\n\u003cli\u003eSimplified Troubleshooting: Isolate potential electrical faults away from the vehicle wiring.\u003c\/li\u003e\n\u003cli\u003eSoftware Updates: Easily flash new calibrations and firmware updates to your ECU.\u003c\/li\u003e\n\u003cli\u003eDurable Build: Constructed with high-quality materials to withstand frequent use in a shop environment.\u003c\/li\u003e\n\u003cli\u003eCompatibility: Designed specifically for Holley EFI systems to ensure reliable connectivity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are setting up a new base map or diagnosing a persistent sensor issue, having the ability to bench-test your ECU saves valuable time and prevents frustration. This harness is a must-have for any shop specializing in high-performance engine management. Invest in the right tools to keep your build running at its best. Explore our full range of diagnostic equipment and wiring solutions at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Bench-Top EFI Test Harness \\u2014 Professional Diagnostic Tool\",\"description\":\"Simplify your EFI troubleshooting with the Holley EFI Bench-Top Test Harness. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-k9_HfJpSVA\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eReliable Connectivity for Your EFI System\u003c\/h2\u003e\u003cp\u003eEnsure your Holley EFI components are connected securely and efficiently with the Holley EFI CAN extension harness. Measuring 9 inches in length, this extension is the perfect solution for routing your CAN bus cables around engine components, chassis bracing, or other obstacles in your engine bay. Designed to meet the high standards of Holley EFI, this harness ensures stable communication between your ECU, dash, and other CAN-enabled accessories.\u003c\/p\u003e\u003ch3\u003eDurability and Ease of Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLength: 9 inches for flexible routing\u003c\/li\u003e\n\u003cli\u003eType: CAN bus extension harness\u003c\/li\u003e\n\u003cli\u003eConstruction: Black rubber coated for heat and abrasion resistance\u003c\/li\u003e\n\u003cli\u003eCompatibility: Works with all Holley EFI CAN-enabled devices\u003c\/li\u003e\n\u003cli\u003eInstallation: Plug-and-play design for quick setup\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA stable CAN bus connection is critical for the proper operation of your EFI system. Poor connections or interference can lead to data loss or system errors, which is why using genuine Holley EFI components is essential. This extension harness features high-quality connectors and durable shielding to protect against electrical noise and environmental factors. Whether you are adding a digital dash, a wideband O2 sensor, or other peripherals, this extension gives you the reach you need for a clean, professional installation. 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Get yours today at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-428\",\"url\":\"https:\/\/ggcracing.com\/products\/can-extension-harness-9in-length\",\"offers\":{\"@type\":\"Offer\",\"price\":\"54.05\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/can-extension-harness-9in-length\",\"sku\":\"GVMR_558-428\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI CAN Extension Harness 9in Length \\u2014 Universal Fitment\",\"item\":\"https:\/\/ggcracing.com\/products\/can-extension-harness-9in-length\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI CAN Extension Harness 9in Length \\u2014 Universal Fitment fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/1CMCzJ-scgI\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eOptimize Your EFI Data Connectivity\u003c\/h2\u003e\u003cp\u003eThe Holley EFI CAN Extension Harness (12ft) is the essential solution for racers and tuners needing extra length for their CAN bus components. Designed to bridge the gap between your Holley HP or Dominator ECU and remote-mounted modules, this harness ensures a clean, interference-free signal path for your data logging and sensor expansion.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerous 12ft Length:\u003c\/strong\u003e Provides maximum flexibility for custom engine bay layouts and remote ECU mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged Construction:\u003c\/strong\u003e Features a high-grade black rubber coating to protect against heat, oil, and vibration common in high-performance environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Compatibility:\u003c\/strong\u003e Engineered specifically for seamless integration with existing Holley EFI CAN networks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Signal Integrity:\u003c\/strong\u003e Minimizes voltage drop and signal noise, ensuring your vital engine data remains accurate during high-RPM operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are adding a digital dash, a wideband O2 sensor, or a remote data logger, this extension harness provides the reach you need without sacrificing signal quality. Its durable design ensures long-term reliability even in the most demanding racing conditions. Trust your engine management setup to the precision engineering of Holley EFI. For all your high-performance wiring needs, rely on the expert selection available at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI CAN Extension Harness 12ft \\u2014 Universal EFI System Wiring\",\"description\":\"Extend your Holley EFI CAN bus connectivity with this 12ft extension harness. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI CAN Extension Harness 12ft \\u2014 Universal EFI System Wiring?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eReliable Connectivity: Holley EFI 8-foot CAN Extension Harness\u003c\/h2\u003e\u003cp\u003eEnsure optimal communication within your Holley EFI system with the robust \u003cb\u003eHolley EFI CAN Extension Harness\u003c\/b\u003e, offering a practical \u003cb\u003e8-foot length\u003c\/b\u003e. This high-quality wiring solution is perfect for bridging distances between your ECU, sensors, and other CAN-enabled devices, providing the necessary reach for a clean and efficient installation. It's an indispensable component for any performance build or EFI upgrade.\u003c\/p\u003e\u003ch3\u003eBuilt to Last: Premium Protection\u003c\/h3\u003e\u003cp\u003eEach 8-foot CAN extension harness features a resilient \u003cb\u003eblack rubber coating\u003c\/b\u003e, meticulously applied to protect the internal wiring from the harsh realities of the engine bay. This durable outer layer offers superior resistance to heat, oil, fuel, and abrasion, ensuring that your critical data signals remain clear and consistent over time. Holley EFI's commitment to quality means you can trust this harness for dependable, long-term performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCAN Wiring Harness:\u003c\/b\u003e Extends your Holley EFI communication network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e8-foot Length:\u003c\/b\u003e Versatile for various component placements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBlack Rubber Coated:\u003c\/b\u003e Provides excellent protection and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSeamless Integration:\u003c\/b\u003e Ensures proper function with Holley EFI systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Quality Construction:\u003c\/b\u003e Designed for reliability in demanding conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEssential for a Professional EFI Installation\u003c\/h3\u003e\u003cp\u003eWhether you're routing wires through tight spaces or needing to position components further apart, this 8-foot CAN extension harness offers the perfect balance of length and manageability. Avoid the pitfalls of short or improperly routed wiring and maintain the integrity of your Holley EFI system. For all your Holley EFI wiring needs, turn to GGCRACING for quality and expertise.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI CAN Extension Harness - 8-foot Length, Black Rubber Coated\",\"description\":\"Connect your Holley EFI components with this 8-foot CAN Extension Harness. 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Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-425\",\"url\":\"https:\/\/ggcracing.com\/products\/can-extension-harness-8ft-length\",\"offers\":{\"@type\":\"Offer\",\"price\":\"67.49\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/can-extension-harness-8ft-length\",\"sku\":\"GVMR_558-425\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI CAN Extension Harness - 8-foot Length, Black Rubber Coated\",\"item\":\"https:\/\/ggcracing.com\/products\/can-extension-harness-8ft-length\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI CAN Extension Harness - 8-foot Length, Black Rubber Coated fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. 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See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880370745428,"sku":"GVMR_558-425","price":70.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-425.jpg?v=1714511091"},{"product_id":"main-wiring-harness-ls2-ls3","title":"Holley EFI Main Wiring Harness LS2 \u0026 LS3 — Fits 58x Reluctor GM LS Engines","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/tkD3e9BOQ0A\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eProfessional-Grade Wiring for GM LS2 \u0026amp; LS3 Engines\u003c\/h2\u003e\u003cp\u003eUnlock the full potential of your GM LS-series engine with the Holley EFI Main Wiring Harness. Specifically engineered for LS2 and LS3 platforms utilizing a 58x reluctor wheel, this harness is the backbone of a high-performance Holley HP or Dominator EFI setup. It eliminates the guesswork of custom wiring, providing a clean, factory-style installation for your engine management system.\u003c\/p\u003e\u003ch3\u003eEngineered for Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Fitment:\u003c\/strong\u003e Tailored specifically for LS2 and LS3 engines to ensure perfect sensor reach and connector alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e58x Reluctor Compatibility:\u003c\/strong\u003e Optimized for modern GM ignition systems for precise timing and fueling control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Integration:\u003c\/strong\u003e Fully compatible with Holley HP and Dominator EFI systems, allowing for advanced tuning capabilities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Materials:\u003c\/strong\u003e High-temperature automotive-grade wiring protected by abrasion-resistant shielding to withstand harsh engine bay environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis harness simplifies the installation process, allowing you to focus on tuning for maximum horsepower and torque. By replacing outdated or damaged factory wiring, you ensure consistent signal delivery to your ECU, preventing common electrical gremlins that plague high-output builds. Whether you are building a street machine or a dedicated track car, this main harness provides the reliability required for consistent performance. Experience the difference in quality and ease of installation with components sourced from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Main Wiring Harness LS2 \u0026 LS3 \\u2014 Fits 58x Reluctor GM LS Engines\",\"description\":\"Upgrade your LS2 or LS3 engine with the Holley EFI Main Wiring Harness. 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Shop GGCRACING today.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-103\",\"url\":\"https:\/\/ggcracing.com\/products\/main-wiring-harness-ls2-ls3\",\"offers\":{\"@type\":\"Offer\",\"price\":\"649.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/main-wiring-harness-ls2-ls3\",\"sku\":\"GVMR_558-103\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI Main Wiring Harness LS2 \u0026 LS3 \\u2014 Fits 58x Reluctor GM LS Engines\",\"item\":\"https:\/\/ggcracing.com\/products\/main-wiring-harness-ls2-ls3\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI Main Wiring Harness LS2 \u0026 LS3 \\u2014 Fits 58x Reluctor GM LS Engines fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Main Wiring Harness LS2 \u0026 LS3 \\u2014 Fits 58x Reluctor GM LS Engines?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880370876500,"sku":"GVMR_558-103","price":607.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-103.jpg?v=1714511099"},{"product_id":"drive-by-wire-harness-gm","title":"Holley EFI Drive By Wire Harness for GM Vehicles — Dominator EFI Compatible 558-406","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/1uju0qpKRb8\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eSeamless Drive By Wire Integration: Holley EFI Harness for GM Vehicles\u003c\/h2\u003e\u003cp\u003eModernize your GM vehicle's throttle control with the Holley EFI Drive By Wire (DBW) Harness, specifically designed for seamless integration with your Holley Dominator EFI system. This dedicated harness is essential for converting to or upgrading an electronic throttle body, providing the precise and reliable communication needed for optimal engine response and drivability. Experience the benefits of advanced throttle control, including improved fuel economy, smoother idle, and enhanced performance.\u003c\/p\u003e\u003ch3\u003eEngineered for Precision GM Throttle Control\u003c\/h3\u003e\u003cp\u003eThe Holley EFI Drive By Wire Harness (MPN: 558-406) is meticulously crafted to meet the rigorous demands of electronic throttle systems in GM applications. It ensures a stable and accurate signal path between your accelerator pedal position sensor, the Holley Dominator ECU, and the electronic throttle body. This eliminates the complexities and potential issues associated with adapting generic wiring, providing a true plug-and-play solution that maintains the integrity of your EFI system.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Advantages:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e**GM Vehicle Specific:** Optimized for direct compatibility with various GM Drive By Wire systems.\u003c\/li\u003e\n\u003cli\u003e**Holley Dominator EFI Ready:** Engineered for flawless integration with Holley's flagship ECU.\u003c\/li\u003e\n\u003cli\u003e**Precise Throttle Control:** Ensures accurate and responsive electronic throttle body operation.\u003c\/li\u003e\n\u003cli\u003e**High-Quality Construction:** Built for durability and reliability in demanding automotive environments.\u003c\/li\u003e\n\u003cli\u003e**Simplified Installation:** Reduces wiring complexity for a cleaner, more efficient setup.\u003c\/li\u003e\n\u003cli\u003e**Enhanced Drivability:** Contributes to smoother acceleration and improved engine management.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Smart Choice for Modern EFI Upgrades\u003c\/h3\u003e\u003cp\u003eFor those looking to leverage the full capabilities of their Holley Dominator EFI system with a Drive By Wire throttle, this harness is an indispensable component. It provides the robust and reliable connection required for consistent performance and safety, making it an intelligent upgrade for any GM performance build or engine swap. Trust in Holley EFI's commitment to quality and innovation. Find this and other essential Holley EFI components to complete your project at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Drive By Wire Harness for GM Vehicles \\u2014 Dominator EFI Compatible 558-406\",\"description\":\"Integrate Drive By Wire with your Holley Dominator EFI system in GM vehicles. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Drive By Wire Harness for GM Vehicles \\u2014 Dominator EFI Compatible 558-?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880370909268,"sku":"GVMR_558-406","price":232.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-406.jpg?v=1714511108"},{"product_id":"main-harness-univesal-un-terminated","title":"Holley EFI Main Harness — Universal Unterminated EFI Wiring Kit","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/yGvb-Har-eE\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eThe Ultimate Solution for Custom EFI Installs\u003c\/h2\u003e\u003cp\u003eFor builders tackling complex engine swaps or unique custom projects, the Holley EFI Universal Unterminated Main Harness is the foundation of a professional-grade engine management system. This kit provides the high-quality wiring and connectors necessary to build a custom harness tailored exactly to your engine bay layout, ensuring a clean and efficient installation for any Holley HP or Dominator EFI setup.\u003c\/p\u003e\u003ch3\u003eUnparalleled Customization\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnterminated Design:\u003c\/strong\u003e Offers complete freedom to route wires exactly where they need to go, perfect for custom engine bay configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Components:\u003c\/strong\u003e Constructed with professional-grade automotive wire and shielding to prevent signal interference and electrical failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Versatility:\u003c\/strong\u003e Fully compatible with both Holley HP and Dominator ECU platforms, allowing for scalable performance builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Integration:\u003c\/strong\u003e Includes the necessary high-quality connectors to ensure a secure and reliable connection to your engine sensors and actuators.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy using an unterminated harness, you avoid the clutter of excess wiring and ensure that every connection is optimized for your specific application. This is the preferred choice for professional engine builders who demand perfection in every detail of their wiring harness. Whether you are running a turbocharged classic or a modern racing engine, this harness provides the electrical backbone you need. Elevate your build with high-performance parts from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Main Harness \\u2014 Universal Unterminated EFI Wiring Kit\",\"description\":\"Build your custom EFI setup with the Holley EFI Universal Unterminated Main Harness. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Main Harness \\u2014 Universal Unterminated EFI Wiring Kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/pEqcCIG9Tr4\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eReliable Wiring for Universal MPFI Applications\u003c\/h2\u003e\u003cp\u003eThe Holley EFI Universal MPFI Main Harness is designed to streamline the wiring of your multi-port fuel injection system. Whether you are upgrading an older engine or installing a new EFI setup, this harness provides a robust and reliable connection between your Holley HP or Dominator ECU and your fuel injectors, sensors, and ignition components. It is the ideal choice for enthusiasts looking for a straightforward, high-quality wiring solution.\u003c\/p\u003e\u003ch3\u003eKey Performance Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal MPFI Compatibility:\u003c\/strong\u003e Engineered to work with a wide variety of multi-port fuel injection setups, making it a versatile choice for diverse engine builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Signal Path:\u003c\/strong\u003e High-quality shielding and wiring ensure that your ECU receives accurate sensor data for precise fuel and spark control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHolley Ecosystem Ready:\u003c\/strong\u003e Designed for seamless plug-and-play operation with Holley HP and Dominator EFI systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Build Quality:\u003c\/strong\u003e Built to withstand the rigors of high-performance driving, featuring heat-resistant insulation and secure, weather-tight connectors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis main harness reduces the complexity of your engine management system, allowing for a cleaner engine bay and more reliable operation. By utilizing factory-style connectors and high-grade materials, you can be confident that your EFI system will perform consistently under all conditions. Don't let poor wiring hold back your engine's potential; upgrade to a professional-grade harness today. Find the best selection of performance engine management components at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Main Harness \\u2014 Universal MPFI Engine Wiring Kit\",\"description\":\"Optimize your multi-port fuel injection with the Holley EFI Universal MPFI Main Harness. 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Available at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-104\",\"url\":\"https:\/\/ggcracing.com\/products\/main-harness-universal-mpfi\",\"offers\":{\"@type\":\"Offer\",\"price\":\"493.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/main-harness-universal-mpfi\",\"sku\":\"GVMR_558-104\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI Main Harness \\u2014 Universal MPFI Engine Wiring Kit\",\"item\":\"https:\/\/ggcracing.com\/products\/main-harness-universal-mpfi\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI Main Harness \\u2014 Universal MPFI Engine Wiring Kit fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Main Harness \\u2014 Universal MPFI Engine Wiring Kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-m1wkAXWjv8\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003ePrecision Wiring for GM LS1 \u0026amp; LS6 Engines\u003c\/h2\u003e\u003cp\u003eThe Holley EFI Main Wiring Harness for LS1 and LS6 engines is the gold standard for enthusiasts looking to modernize their engine management. Specifically designed for engines utilizing the 24x reluctor wheel, this harness provides a direct, clean connection for your Holley HP or Dominator EFI system. It is the perfect solution for those who demand reliability and performance from their LS-based powerplant.\u003c\/p\u003e\u003ch3\u003eEngineered for Excellence\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTailored Fitment:\u003c\/strong\u003e Specifically configured for LS1 and LS6 engines, ensuring all sensor connectors are perfectly positioned for a clean install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24x Reluctor Support:\u003c\/strong\u003e Optimized for early-model LS engine ignition systems to provide rock-solid timing and fuel delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Integration:\u003c\/strong\u003e Fully compatible with the Holley HP and Dominator ECU platforms, unlocking advanced tuning features.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Durability Design:\u003c\/strong\u003e Features heat-resistant wiring and reinforced shielding to protect against the harsh conditions of a high-performance engine bay.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy upgrading to this main harness, you eliminate the common electrical issues associated with aging factory wiring. The result is a more responsive engine, better fuel efficiency, and the peace of mind that comes with a professional-grade installation. Whether you are building a street-legal hot rod or a dedicated track machine, this harness ensures your engine management system functions at its peak. Trust your build to the quality components available at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Main Wiring Harness LS1 \u0026 LS6 \\u2014 Fits 24x Reluctor GM LS Engines\",\"description\":\"Upgrade your LS1 or LS6 engine with the Holley EFI Main Wiring Harness. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eCustom Fuel Delivery: Holley EFI Universal Un-Terminated Injector Harness\u003c\/h2\u003e\u003cp\u003eTake full control of your fuel injector wiring with the Holley EFI Universal Un-Terminated Injector Harness. This versatile kit is an indispensable tool for custom engine builds, specialized injector setups, or any application requiring precise, tailored fuel injector connections. Designed for compatibility with Holley HP and Dominator EFI systems, it provides the flexibility to create an injector harness that perfectly matches your engine's unique requirements, complete with included Bosch terminal ends.\u003c\/p\u003e\u003ch3\u003eFeatures for Precision Fueling\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eUn-Terminated Design:\u003c\/b\u003e Allows for custom wire lengths and precise routing for each injector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBosch Terminal Ends Included:\u003c\/b\u003e Ensures compatibility with a wide range of common fuel injectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHolley HP\/Dominator EFI Ready:\u003c\/b\u003e Integrates seamlessly with Holley's advanced engine management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Quality Conductors:\u003c\/b\u003e Guarantees reliable signal delivery to injectors for consistent fuel spray.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTailored Fuel Injector Control\u003c\/h3\u003e\u003cp\u003eThis universal injector harness empowers you to build a clean, efficient, and highly customized fuel system. By starting with an un-terminated harness, you can optimize wire routing to avoid heat sources and interference, ensuring each injector receives a pristine signal. This level of customization is crucial for maximizing engine performance, achieving accurate tuning, and maintaining consistent fuel delivery under all operating conditions. The included Bosch terminal ends simplify the connection process to your chosen injectors.\u003c\/p\u003e\u003ch3\u003eThe Holley EFI Advantage for Injector Control\u003c\/h3\u003e\u003cp\u003eHolley EFI is a leader in precision engine control, and this un-terminated injector harness extends that precision to your fuel delivery system. It's the ideal choice for builders who demand exactness and reliability in their custom projects. For all your Holley EFI components and expert advice, turn to GGCRACING.COM.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Universal Un-Terminated Injector Harness \\u2014 Bosch Terminal Ends\",\"description\":\"Craft custom fuel injector wiring with the Holley EFI Universal Un-Terminated Injector Harness. 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See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880371204180,"sku":"GVMR_558-204","price":119.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-204.jpg?v=1714511153"},{"product_id":"dominator-efi-dbw-harness-early-truck","title":"Holley EFI Dominator DBW Harness — Early GM Truck Engine Wiring","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/t8vD_GD4log\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eOptimize Your Engine Management with Holley EFI\u003c\/h2\u003e\u003cp\u003eThe Holley EFI Dominator Drive-by-Wire (DBW) harness is the ultimate solution for enthusiasts performing engine swaps or upgrading their early GM truck platforms. Designed specifically to integrate seamlessly with the powerful Dominator EFI system, this harness ensures that your electronic throttle control operates with factory-level precision and reliability.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEngineered for seamless compatibility with Holley Dominator EFI systems\u003c\/li\u003e\n\u003cli\u003eOptimized for early model GM truck DBW configurations\u003c\/li\u003e\n\u003cli\u003eHigh-quality wiring and connectors to prevent signal interference\u003c\/li\u003e\n\u003cli\u003eSimplifies complex EFI installations for a cleaner engine bay\u003c\/li\u003e\n\u003cli\u003eDurable construction designed to withstand harsh under-hood environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are building a high-performance street truck or a dedicated track vehicle, having a reliable wiring harness is critical for consistent throttle response and engine safety. This harness eliminates the guesswork associated with custom wiring, providing a plug-and-play experience that saves you hours of fabrication time. Built to meet the rigorous demands of modern fuel injection, it ensures your engine receives the precise data required for peak horsepower and torque output. Trust the experts at GGCRACING to provide the high-quality components you need for your next build.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Dominator DBW Harness \\u2014 Early GM Truck Engine Wiring\",\"description\":\"Upgrade your engine management with the Holley EFI Dominator DBW harness for early GM trucks. Precision-engineered for reliable performance. Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-429\",\"url\":\"https:\/\/ggcracing.com\/products\/dominator-efi-dbw-harness-early-truck\",\"offers\":{\"@type\":\"Offer\",\"price\":\"248.35\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/dominator-efi-dbw-harness-early-truck\",\"sku\":\"GVMR_558-429\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI Dominator DBW Harness \\u2014 Early GM Truck Engine Wiring\",\"item\":\"https:\/\/ggcracing.com\/products\/dominator-efi-dbw-harness-early-truck\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI Dominator DBW Harness \\u2014 Early GM Truck Engine Wiring fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Dominator DBW Harness \\u2014 Early GM Truck Engine Wiring?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880371499092,"sku":"GVMR_558-429","price":256.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-429.jpg?v=1714511172"},{"product_id":"trans-wire-harness-gm-4l60-pre-2009-4l80","title":"Holley EFI Transmission Harness — GM 4L60E and 4L80E Pre-2009","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/O9dch9NIyhY\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003ePrecision Transmission Control for GM Automatics\u003c\/h2\u003e\u003cp\u003eTake full control of your transmission shifting and performance with the Holley EFI Transmission Wiring Harness. Specifically designed for GM 4L60E and 4L80E transmissions produced prior to 2009, this harness is an essential component for any Dominator EFI setup. It provides the reliable signal transmission necessary for precise shift points and optimal torque converter lock-up management.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Holley EFI Harness?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect fit for GM 4L60E and 4L80E transmissions (pre-2009)\u003c\/li\u003e\n\u003cli\u003eSeamless integration with Holley Dominator EFI controllers\u003c\/li\u003e\n\u003cli\u003eHigh-grade insulation to protect against transmission fluid and heat\u003c\/li\u003e\n\u003cli\u003eEnsures accurate sensor feedback for improved transmission longevity\u003c\/li\u003e\n\u003cli\u003eSimplified installation process for professional-grade results\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eProper transmission management is just as important as engine tuning when it comes to vehicle performance. By using this dedicated Holley harness, you eliminate common electrical gremlins that often plague custom transmission setups. The connectors are built to OEM specifications, ensuring a secure fit that won't vibrate loose under high-load conditions. Whether you are drag racing or cruising the street, this harness provides the consistency you demand from your drivetrain. Upgrade your transmission control system today with premium components from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Transmission Harness \\u2014 GM 4L60E and 4L80E Pre-2009\",\"description\":\"Ensure perfect transmission control with the Holley EFI transmission harness for GM 4L60E and 4L80E. 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Buy at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-405\",\"url\":\"https:\/\/ggcracing.com\/products\/trans-wire-harness-gm-4l60-pre-2009-4l80\",\"offers\":{\"@type\":\"Offer\",\"price\":\"306.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/trans-wire-harness-gm-4l60-pre-2009-4l80\",\"sku\":\"GVMR_558-405\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI Transmission Harness \\u2014 GM 4L60E and 4L80E Pre-2009\",\"item\":\"https:\/\/ggcracing.com\/products\/trans-wire-harness-gm-4l60-pre-2009-4l80\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI Transmission Harness \\u2014 GM 4L60E and 4L80E Pre-2009 fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Transmission Harness \\u2014 GM 4L60E and 4L80E Pre-2009?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880371761236,"sku":"GVMR_558-405","price":286.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-405.jpg?v=1714511182"},{"product_id":"can-adapter-new-device-to-2-pin-main-harness","title":"Holley EFI CAN Adapter — 2-Pin Main Harness to CAN Device","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/MlQM1jK2KhQ\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eSeamless Connectivity for Your Holley EFI System\u003c\/h2\u003e\u003cp\u003eThe Holley EFI CAN Adapter (558-430) is an essential component for enthusiasts looking to expand their data acquisition and peripheral capabilities. This high-quality adapter allows you to bridge a 2-pin main harness connection to a CAN-enabled device, ensuring reliable data transfer and communication between your engine management system and external sensors or displays.\u003c\/p\u003e\u003ch3\u003eWhy Choose the Holley CAN Adapter?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect fitment for Holley EFI main wiring harnesses\u003c\/li\u003e\n\u003cli\u003eRobust construction for harsh automotive environments\u003c\/li\u003e\n\u003cli\u003eSimplifies the addition of CAN-based accessories\u003c\/li\u003e\n\u003cli\u003eEnsures stable data communication\u003c\/li\u003e\n\u003cli\u003eEasy plug-and-play installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are adding a digital dash, an expansion module, or other CAN-bus integrated hardware, this adapter provides a clean and secure connection. Avoid the hassle of splicing wires and ensure your electronics communicate effectively with this genuine Holley component. At GGCRACING, we provide the high-quality parts you need to keep your racing setup running at peak efficiency.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI CAN Adapter \\u2014 2-Pin Main Harness to CAN Device\",\"description\":\"Easily connect your CAN devices to your Holley EFI system with the 558-430 CAN adapter. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI CAN Adapter \\u2014 2-Pin Main Harness to CAN Device?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880372908116,"sku":"GVMR_558-430","price":40.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-430.jpg?v=1714511237"},{"product_id":"injector-harness-ford-uscar-ev6-style-injector","title":"Holley EFI Injector Harness — USCAR\/EV6 Style for Small Block Ford","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/pEqcCIG9Tr4\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eReliable Fuel Delivery with Holley EFI Injector Harnesses\u003c\/h2\u003e\u003cp\u003eEnsure your fuel system is operating at its peak with the Holley EFI Injector Harness designed for USCAR\/EV6 style injectors. Specifically engineered for Small Block Ford applications, this harness provides a secure and efficient connection between your ECU and fuel injectors, preventing common electrical issues associated with aging or poorly constructed wiring.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCompatibility: USCAR \/ EV6 style fuel injectors\u003c\/li\u003e\n\u003cli\u003eApplication: Small Block Ford engines\u003c\/li\u003e\n\u003cli\u003eHigh-temperature resistant wiring\u003c\/li\u003e\n\u003cli\u003eFactory-style connectors for a perfect fit\u003c\/li\u003e\n\u003cli\u003eOptimized for Holley EFI systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA faulty injector harness can lead to misfires, lean conditions, and potential engine damage. By replacing your old harness with this high-quality Holley component, you ensure consistent voltage and signal integrity to every injector. The durable insulation and precision-molded connectors are built to withstand the heat and vibration of high-performance driving. Whether you are performing a custom EFI conversion or maintaining your current setup, this harness is the perfect choice for reliability. Find all your essential engine wiring components at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Injector Harness \\u2014 USCAR\/EV6 Style for Small Block Ford\",\"description\":\"Upgrade your fuel system with the Holley EFI USCAR\/EV6 injector harness for Small Block Ford. High-quality wiring for optimal performance. Shop GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-212\",\"url\":\"https:\/\/ggcracing.com\/products\/injector-harness-ford-uscar-ev6-style-injector\",\"offers\":{\"@type\":\"Offer\",\"price\":\"179.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/injector-harness-ford-uscar-ev6-style-injector\",\"sku\":\"GVMR_558-212\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI Injector Harness \\u2014 USCAR\/EV6 Style for Small Block Ford\",\"item\":\"https:\/\/ggcracing.com\/products\/injector-harness-ford-uscar-ev6-style-injector\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI Injector Harness \\u2014 USCAR\/EV6 Style for Small Block Ford fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Injector Harness \\u2014 USCAR\/EV6 Style for Small Block Ford?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880373071956,"sku":"GVMR_558-212","price":186.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-212.jpg?v=1714511246"},{"product_id":"adapter-harness-wideband-terminator-x","title":"Holley EFI 558-463 Wideband Adapter Harness — Terminator X Systems","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSeamless Wideband Integration with the Holley EFI 558-463 Adapter Harness\u003c\/h2\u003e\u003cp\u003eUnlock the full tuning potential of your Holley Terminator X EFI system with the Holley EFI 558-463 Wideband Adapter Harness. This essential component provides a direct and reliable connection for an external wideband oxygen sensor, allowing your Terminator X ECU to receive precise air\/fuel ratio (AFR) data. Accurate AFR feedback is critical for optimizing engine performance, fuel efficiency, and ensuring the longevity of your high-performance engine.\u003c\/p\u003e\u003ch3\u003eDesigned for Terminator X Precision\u003c\/h3\u003e\u003cp\u003eThe Holley EFI 558-463 adapter harness is specifically engineered for a plug-and-play installation with Terminator X systems, eliminating the need for complex wiring modifications. Its high-quality construction ensures optimal signal integrity, transmitting accurate wideband data to your ECU for real-time tuning adjustments. Whether you're fine-tuning for maximum power or daily driving efficiency, this harness is a vital link in your engine management system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSystem Compatibility:\u003c\/b\u003e Specifically designed for Holley Terminator X EFI systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFunction:\u003c\/b\u003e Adapts wideband oxygen sensor for ECU input\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInstallation:\u003c\/b\u003e Plug-and-play for easy integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eQuality:\u003c\/b\u003e Durable wiring and connectors for reliable data transmission\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e Holley EFI 558-463\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOptimize Your Engine's Air\/Fuel Ratio\u003c\/h3\u003e\u003cp\u003eAccurate wideband data is the cornerstone of effective EFI tuning. With the Holley EFI 558-463 adapter harness, you can confidently monitor and adjust your engine's AFR, preventing lean conditions that can cause damage or rich conditions that waste fuel and reduce power. Trust Holley EFI to provide the components you need for a perfectly tuned engine. Enhance your Terminator X system with this crucial adapter harness, available at GGCRACING.COM.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI 558-463 Wideband Adapter Harness \\u2014 Terminator X Systems\",\"description\":\"Integrate a wideband O2 sensor with your Terminator X system using the Holley EFI 558-463 adapter harness. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI 558-463 Wideband Adapter Harness \\u2014 Terminator X Systems?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSeamless Sensor Integration\u003c\/h2\u003e\u003cp\u003eSimplify your wiring project with the Holley EFI MPFI to Delphi GT MAP Sensor Adapter Harness (558-466). This high-quality adapter is designed to bridge the gap between different sensor connector styles, allowing you to integrate modern Delphi GT MAP sensors into your existing MPFI wiring setup without the need for cutting or splicing. It is the perfect solution for builders who want a clean, reliable, and professional-grade electrical connection.\u003c\/p\u003e\u003ch3\u003eKey Advantages\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Installation:\u003c\/strong\u003e Eliminates the need for tedious soldering or crimping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-Quality Connectors:\u003c\/strong\u003e Ensures a secure, weather-resistant connection for long-term reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect Pinout:\u003c\/strong\u003e Specifically engineered for seamless compatibility between MPFI and Delphi GT sensor types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Wiring:\u003c\/strong\u003e Built to withstand the heat and vibration of an automotive engine bay.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWiring issues are the most common cause of sensor failure and erratic engine performance. By using this factory-style adapter, you ensure that your MAP sensor signal remains clean and consistent, providing your ECU with the accurate data it needs for precise fuel and ignition mapping. Whether you are performing an engine swap or upgrading your current EFI system, this harness adapter saves you time and prevents potential electrical gremlins. Trust your electrical connections to high-quality components designed for the job. For all your EFI wiring and sensor needs, look no further than GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI 558-466 MPFI to Delphi GT MAP Sensor Wiring Adapter Harness\",\"description\":\"Easily connect your sensors with the Holley EFI MPFI to Delphi GT MAP sensor adapter harness. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI 558-466 MPFI to Delphi GT MAP Sensor Wiring Adapter Harness?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880386965588,"sku":"GVMR_558-466","price":44.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-466.jpg?v=1714512272"},{"product_id":"engine-main-harness-ford-5-0l-5-8l","title":"Holley EFI Engine Main Wiring Harness — Plug-and-Play — Fits Small Block Ford 5.0L\/5.8L","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSeamless EFI Integration with Holley EFI Main Harness\u003c\/h2\u003e\u003cp\u003eRevolutionize your Small Block Ford 5.0L or 5.8L engine's performance and reliability with the \u003cb\u003eHolley EFI Engine Main Wiring Harness\u003c\/b\u003e. This plug-and-play solution eliminates the complexity often associated with EFI conversions, providing a clean, efficient, and reliable electrical backbone for your engine management system. Designed for precision and ease of installation, it ensures all critical engine sensors and components are perfectly integrated with your Holley EFI system.\u003c\/p\u003e\u003ch3\u003eEngineered for Small Block Ford Excellence\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePlug-and-Play Simplicity:\u003c\/b\u003e Drastically reduces installation time and potential wiring errors, making EFI upgrades straightforward.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVehicle Fitment:\u003c\/b\u003e Specifically designed for Small Block Ford 5.0L and 5.8L engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Quality Construction:\u003c\/b\u003e Features durable, automotive-grade wiring and connectors for long-lasting performance and resistance to engine bay elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOptimized for Holley EFI:\u003c\/b\u003e Ensures seamless communication and control with your Holley EFI ECU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEnhanced Reliability:\u003c\/b\u003e Provides a robust and organized wiring solution, minimizing electrical interference and maximizing system stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you're building a new project or upgrading an existing one, this Holley EFI main harness is an indispensable component for achieving a professional-grade EFI setup. Say goodbye to frustrating wiring nightmares and hello to consistent, powerful engine operation. Get your Holley EFI harness today at GGCRACING and experience the difference.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Engine Main Wiring Harness \\u2014 Plug-and-Play \\u2014 Fits Small Block Ford 5.0L\/5.8L\",\"description\":\"Simplify your EFI conversion with the Holley EFI Engine Main Wiring Harness for Small Block Ford 5.0L\/5.8L. 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Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley EFI\"},\"mpn\":\"558-128\",\"url\":\"https:\/\/ggcracing.com\/products\/engine-main-harness-ford-5-0l-5-8l\",\"offers\":{\"@type\":\"Offer\",\"price\":\"505.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/engine-main-harness-ford-5-0l-5-8l\",\"sku\":\"GVMR_558-128\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley EFI\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley+EFI\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley EFI Engine Main Wiring Harness \\u2014 Plug-and-Play \\u2014 Fits Small Block Ford 5.0L\/5.8L\",\"item\":\"https:\/\/ggcracing.com\/products\/engine-main-harness-ford-5-0l-5-8l\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley EFI Engine Main Wiring Harness \\u2014 Plug-and-Play \\u2014 Fits Small Block Ford 5. fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Engine Main Wiring Harness \\u2014 Plug-and-Play \\u2014 Fits Small Block Ford 5.?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":40880396501076,"sku":"GVMR_558-128","price":584.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-128.jpg?v=1714512977"},{"product_id":"main-harness-99-04-ford-modular-engine","title":"Holley Main EFI Wiring Harness — Fits 1999-2004 Ford Modular Engines","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/pEqcCIG9Tr4\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eEssential Wiring for Your Ford Modular Engine\u003c\/h2\u003e\u003cp\u003eA robust and correctly terminated wiring harness is absolutely paramount for the dependable operation of your Ford Modular engine's EFI system. The \u003cstrong\u003eHolley Main EFI Wiring Harness for 1999-2004 Ford Modular Engines\u003c\/strong\u003e provides a complete, high-quality solution to replace aging factory wiring or to facilitate a new EFI installation. This harness is designed to ensure optimal signal integrity and power delivery to all critical engine components.\u003c\/p\u003e\u003ch3\u003ePremium Features for Ford Modular Reliability\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Terminated Design:\u003c\/strong\u003e This Holley main EFI harness is a fully terminated solution, ready for plug-and-play installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Integration:\u003c\/strong\u003e Designed to integrate seamlessly with your 1999-2004 Ford Modular engine, providing all necessary connections for sensors, injectors, and other critical EFI components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction:\u003c\/strong\u003e Utilizes automotive-grade wiring and durable connectors, built to withstand the demanding conditions of an engine bay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Installation:\u003c\/strong\u003e Eliminates the need for extensive wiring modifications, saving time and reducing potential errors during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePrecise Fitment for Ford Modular Platforms\u003c\/h3\u003e\u003cp\u003eThis harness is specifically engineered for \u003cstrong\u003e1999-2004 Ford Modular engines\u003c\/strong\u003e, offering a precise fit and straightforward installation. Whether you're refreshing an older build or undertaking a new project, this harness ensures a clean and efficient electrical pathway, which is vital for accurate engine control and peak performance. It's the ideal choice for maintaining or upgrading your Ford's electrical system.\u003c\/p\u003e\u003ch3\u003eWhy Choose a Holley Modular Harness?\u003c\/h3\u003e\u003cp\u003eReplacing old, brittle, or damaged factory wiring is crucial for preventing costly electrical issues and ensuring reliable engine operation. This Holley harness simplifies EFI conversions and guarantees optimal signal integrity for peak engine performance and reliability. Avoid common electrical gremlins with a purpose-built, high-quality harness. Discover premium Ford performance parts at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-500cfm-street-avenger\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 500CFM Street Avenger 2-Barrel Carburetor — Aluminum Finish\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-750cfm-4160-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4160 Series Performance Carburetor 750CFM — Square Bore Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/750-cfm-4150-hp-carb-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 750 CFM 4150 HP Double Pumper Carburetor 4-Barrel — Mechanical Secondary\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/competition-carburetor-1250cfm-4500-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4500 Series Dominator 1250 CFM 4-Barrel Competition Carburetor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/650-cfm-classic-hp-carb-4150-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley Classic HP 4150 650 CFM 4-Barrel Carburetor — Mechanical Secondary Square Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley Main EFI Wiring Harness \\u2014 Fits 1999-2004 Ford Modular Engines\",\"description\":\"Upgrade your 1999-2004 Ford Modular engine with the Holley terminated main EFI wiring harness. 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From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/E9w0tCpgCTE\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eOptimize Your EFI Power Delivery\u003c\/h2\u003e\u003cp\u003eThe Holley Sniper 2 Main Harness for PDM is engineered to provide a clean, reliable power connection for your Sniper 2 EFI system. Designed specifically for use with Power Distribution Modules, this harness eliminates the guesswork in your electrical setup, ensuring your engine management system receives consistent voltage without the risk of voltage drops or intermittent connectivity.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh-quality construction for maximum durability\u003c\/li\u003e\n\u003cli\u003eDesigned for seamless integration with Sniper 2 PDM\u003c\/li\u003e\n\u003cli\u003ePlug-and-play architecture reduces installation time\u003c\/li\u003e\n\u003cli\u003eOptimized gauge wiring for efficient power transfer\u003c\/li\u003e\n\u003cli\u003eResistant to heat, oil, and engine bay contaminants\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are performing a fresh EFI conversion or upgrading an existing Sniper 2 setup, this main harness provides the foundation for a stable electrical environment. By utilizing factory-grade connectors and high-strand count wire, Holley ensures that your fuel injection system operates at peak performance under all driving conditions. Don't let faulty wiring compromise your tune; invest in the precision-engineered components designed for your specific setup. Experience the professional quality of Holley performance parts available at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-500cfm-street-avenger\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 500CFM Street Avenger 2-Barrel Carburetor — Aluminum Finish\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-750cfm-4160-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4160 Series Performance Carburetor 750CFM — Square Bore Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/750-cfm-4150-hp-carb-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 750 CFM 4150 HP Double Pumper Carburetor 4-Barrel — Mechanical Secondary\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/competition-carburetor-1250cfm-4500-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4500 Series Dominator 1250 CFM 4-Barrel Competition Carburetor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/650-cfm-classic-hp-carb-4150-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley Classic HP 4150 650 CFM 4-Barrel Carburetor — Mechanical Secondary Square Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley Sniper 2 Main Wiring Harness \\u2014 PDM Power Distribution Module\",\"description\":\"Upgrade your EFI system with the Holley Sniper 2 Main Harness for PDM. 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Shop now at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley\"},\"mpn\":\"558-190\",\"url\":\"https:\/\/ggcracing.com\/products\/sniper-2-main-harness-for-pdm\",\"offers\":{\"@type\":\"Offer\",\"price\":\"134.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/sniper-2-main-harness-for-pdm\",\"sku\":\"BBVL_558-190\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley Sniper 2 Main Wiring Harness \\u2014 PDM Power Distribution Module\",\"item\":\"https:\/\/ggcracing.com\/products\/sniper-2-main-harness-for-pdm\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley Sniper 2 Main Wiring Harness \\u2014 PDM Power Distribution Module fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley Sniper 2 Main Wiring Harness \\u2014 PDM Power Distribution Module?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/pEqcCIG9Tr4\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eStreamline Your Fuel System Wiring\u003c\/h2\u003e\u003cp\u003eThe Holley Sniper 2 Main Harness with Fuel Pump Relay is the ultimate solution for enthusiasts looking to simplify their EFI installation. By integrating the fuel pump relay directly into the main harness, this kit reduces the complexity of your wiring layout, minimizing potential failure points and cleaning up your engine bay. This harness is specifically designed to work with the Sniper 2 EFI system and PDM, providing a robust power path for your high-performance fuel pump.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Harness?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIntegrated fuel pump relay for simplified installation\u003c\/li\u003e\n\u003cli\u003eHeavy-duty wiring to handle high-flow fuel pumps\u003c\/li\u003e\n\u003cli\u003eFactory-style connectors for a secure, weather-tight fit\u003c\/li\u003e\n\u003cli\u003eReduces electrical clutter in the engine compartment\u003c\/li\u003e\n\u003cli\u003eDesigned for long-term reliability in high-heat environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eReliable fuel delivery is critical for any EFI conversion. This harness ensures that your fuel pump receives the steady, clean power it needs to maintain consistent pressure, preventing lean conditions and engine damage. The plug-and-play design allows for a quick installation, getting you back on the road or track faster. Trust in the engineering excellence of Holley to provide the electrical infrastructure your engine deserves. Find all your essential performance wiring solutions here at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-500cfm-street-avenger\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 500CFM Street Avenger 2-Barrel Carburetor — Aluminum Finish\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-750cfm-4160-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4160 Series Performance Carburetor 750CFM — Square Bore Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/750-cfm-4150-hp-carb-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 750 CFM 4150 HP Double Pumper Carburetor 4-Barrel — Mechanical Secondary\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/competition-carburetor-1250cfm-4500-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4500 Series Dominator 1250 CFM 4-Barrel Competition Carburetor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/650-cfm-classic-hp-carb-4150-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley Classic HP 4150 650 CFM 4-Barrel Carburetor — Mechanical Secondary Square Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley Sniper 2 Main Harness with Fuel Pump Relay \\u2014 PDM Integration\",\"description\":\"Get the Holley Sniper 2 Main Harness with integrated fuel pump relay. Simplify your EFI wiring and ensure reliable fuel delivery. Buy at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley\"},\"mpn\":\"558-191\",\"url\":\"https:\/\/ggcracing.com\/products\/sniper-2-main-harness-w-fuel-pump-relay\",\"offers\":{\"@type\":\"Offer\",\"price\":\"217.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/sniper-2-main-harness-w-fuel-pump-relay\",\"sku\":\"BBVL_558-191\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley Sniper 2 Main Harness with Fuel Pump Relay \\u2014 PDM Integration\",\"item\":\"https:\/\/ggcracing.com\/products\/sniper-2-main-harness-w-fuel-pump-relay\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley Sniper 2 Main Harness with Fuel Pump Relay \\u2014 PDM Integration fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley Sniper 2 Main Harness with Fuel Pump Relay \\u2014 PDM Integration?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":40893340450900,"sku":"BBVL_558-191","price":202.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-191.jpg?v=1714915778"},{"product_id":"sniper-2-i-o-harness","title":"Holley Sniper 2 I\/O Wiring Harness — Input and Output Expansion","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/7lCRoQHNm6A\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eMaximize Your EFI System Potential\u003c\/h2\u003e\u003cp\u003eTake full control of your engine's auxiliary functions with the Holley Sniper 2 I\/O Wiring Harness. This essential component allows you to expand the input and output capabilities of your Sniper 2 EFI system, enabling the integration of custom sensors, electric fans, nitrous activation, or other performance accessories. Designed for precision and reliability, this harness ensures that your custom wiring setup remains clean, organized, and electrically sound.\u003c\/p\u003e\u003ch3\u003eWhy Choose the Sniper 2 I\/O Harness?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Integration:\u003c\/strong\u003e Easily add inputs for sensors or outputs for relays and solenoids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Quality:\u003c\/strong\u003e Uses OEM-grade connectors to ensure a weather-resistant, secure connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Installation:\u003c\/strong\u003e Color-coded wiring makes custom circuit mapping straightforward and efficient.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Performance Reliability:\u003c\/strong\u003e Built to handle the vibration and heat of high-performance engine bays.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are building a street machine or a dedicated track car, the ability to monitor and control extra parameters is vital. The Sniper 2 I\/O harness provides the necessary pathways to connect your ECU to the rest of your vehicle's systems, allowing for advanced features like staged nitrous, cooling fan control, or data logging triggers. Don't settle for limited functionality; upgrade your wiring infrastructure today. For all your high-performance automotive electrical needs, visit GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-500cfm-street-avenger\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 500CFM Street Avenger 2-Barrel Carburetor — Aluminum Finish\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-750cfm-4160-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4160 Series Performance Carburetor 750CFM — Square Bore Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/750-cfm-4150-hp-carb-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 750 CFM 4150 HP Double Pumper Carburetor 4-Barrel — Mechanical Secondary\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/competition-carburetor-1250cfm-4500-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4500 Series Dominator 1250 CFM 4-Barrel Competition Carburetor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/650-cfm-classic-hp-carb-4150-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley Classic HP 4150 650 CFM 4-Barrel Carburetor — Mechanical Secondary Square Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley Sniper 2 I\/O Wiring Harness \\u2014 Input and Output Expansion\",\"description\":\"Expand your Holley Sniper 2 EFI capabilities with the official I\/O wiring harness. High-quality construction for custom sensor integration. Shop GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley\"},\"mpn\":\"558-497\",\"url\":\"https:\/\/ggcracing.com\/products\/sniper-2-i-o-harness\",\"offers\":{\"@type\":\"Offer\",\"price\":\"41.37\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/sniper-2-i-o-harness\",\"sku\":\"BBVL_558-497\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley Sniper 2 I\/O Wiring Harness \\u2014 Input and Output Expansion\",\"item\":\"https:\/\/ggcracing.com\/products\/sniper-2-i-o-harness\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley Sniper 2 I\/O Wiring Harness \\u2014 Input and Output Expansion fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley Sniper 2 I\/O Wiring Harness \\u2014 Input and Output Expansion?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":40893345923156,"sku":"BBVL_558-497","price":43.03,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-497.jpg?v=1714915835"},{"product_id":"ft450-550-a-harness-10ft","title":"FuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/6laCVFWpMfI\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eOptimize Your FT450\/FT550 Setup with the A-Harness\u003c\/h2\u003e\u003cp\u003eThe FuelTech FT450\/FT550 A-Harness is a critical component for those utilizing the powerful FT450 or FT550 engine management systems. This 10-foot harness is designed to provide a clean and reliable connection between your ECU and the engine's primary sensors and injectors. Its length is ideal for standard engine bay configurations, offering enough slack for neat routing while maintaining signal integrity for precise engine control.\u003c\/p\u003e\u003ch3\u003eTechnical Advantages\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect Fit:\u003c\/strong\u003e Specifically engineered for the A-connector of FT450 and FT550 ECUs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10ft Length:\u003c\/strong\u003e Provides optimal reach for most standard engine bay layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction:\u003c\/strong\u003e Built to withstand the heat and vibration of high-performance driving.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Connectivity:\u003c\/strong\u003e Ensures stable communication between the ECU and engine components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStreamlined Installation:\u003c\/strong\u003e Simplifies the wiring process for a cleaner, more efficient build.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are upgrading from a basic ECU or performing a complete engine management overhaul, the A-Harness is a vital piece of the puzzle. It helps prevent common electrical issues like voltage drops or signal interference, which can lead to poor performance or engine damage. By using genuine FuelTech wiring, you ensure that your ECU operates at its full potential, providing you with the data and control you need for competitive racing. For professional-grade engine management components, look no further than GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/550 A-Harness 20ft Engine Wiring Harness — Universal ECU Integration\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech FT450\/FT550 A-Harness 10ft \\u2014 Engine Control Wiring\",\"description\":\"High-quality 10ft A-Harness for FuelTech FT450 and FT550 ECUs. Ensure reliable engine management with this professional wiring solution. Buy at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"FuelTech\"},\"mpn\":\"2001005569\",\"url\":\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\",\"offers\":{\"@type\":\"Offer\",\"price\":\"139.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\",\"sku\":\"KMDZ_2001005569\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"FuelTech\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=FuelTech\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"FuelTech FT450\/FT550 A-Harness 10ft \\u2014 Engine Control Wiring\",\"item\":\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the FuelTech FT450\/FT550 A-Harness 10ft \\u2014 Engine Control Wiring fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech FT450\/FT550 A-Harness 10ft \\u2014 Engine Control Wiring?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009522344020,"sku":"KMDZ_2001005569","price":139.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH2001005569.jpg?v=1715807859"},{"product_id":"ft450-550-a-harness-20ft","title":"FuelTech FT450\/550 A-Harness 20ft Engine Wiring Harness — Universal ECU Integration","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eProfessional Grade Engine Management Connectivity\u003c\/h2\u003e\u003cp\u003eThe FuelTech FT450\/550 A-Harness is a critical component for any high-performance build requiring precise engine management. Designed specifically for the FT450 and FT550 ECU platforms, this 20-foot harness provides the necessary length and reliability for professional-grade installations. Whether you are performing a full engine swap or upgrading your current EFI system, this harness ensures a clean, signal-stable connection for your critical engine sensors and actuators.\u003c\/p\u003e\u003ch3\u003eKey Features and Technical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for FuelTech FT450 and FT550 ECU systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 20-foot reach allows for flexible ECU mounting locations in various chassis types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e High-temperature automotive-grade insulation protects against harsh engine bay environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Engineering:\u003c\/strong\u003e Terminated with high-quality connectors to prevent voltage drops and signal interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Installation:\u003c\/strong\u003e Color-coded wiring simplifies the integration process for both professional tuners and DIY enthusiasts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eProper wiring is the backbone of any reliable EFI setup. By utilizing the official FuelTech A-Harness, you eliminate the guesswork and potential failure points associated with custom-made wiring looms. This harness is built to withstand the rigors of drag racing, circuit racing, and street performance applications, ensuring your engine management system performs at its peak under all conditions. Trust your build to the best components available at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech FT450\/550 A-Harness 20ft Engine Wiring Harness \\u2014 Universal ECU Integration\",\"description\":\"Upgrade your engine management with the FuelTech FT450\/550 A-Harness 20ft. High-quality wiring for reliable ECU connectivity. Shop now at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"FuelTech\"},\"mpn\":\"2001005570\",\"url\":\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-20ft\",\"offers\":{\"@type\":\"Offer\",\"price\":\"189.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-20ft\",\"sku\":\"KMDZ_2001005570\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"FuelTech\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=FuelTech\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"FuelTech FT450\/550 A-Harness 20ft Engine Wiring Harness \\u2014 Universal ECU Integration\",\"item\":\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-20ft\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the FuelTech FT450\/550 A-Harness 20ft Engine Wiring Harness \\u2014 Universal ECU Integrat fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech FT450\/550 A-Harness 20ft Engine Wiring Harness \\u2014 Universal ECU Integrat?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009523458132,"sku":"KMDZ_2001005570","price":189.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH2001005570.jpg?v=1715807887"},{"product_id":"ft550-b-harness-10ft","title":"FuelTech FT550 B-Harness 10ft — Auxiliary Engine Control Unit Wiring","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/p-a4_8CXKVU\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eExpand Your Control: FuelTech FT550 B-Harness 10ft for Auxiliary Functions\u003c\/h2\u003e\u003cp\u003eUnlock the full potential of your FuelTech FT550 ECU with the essential 10-foot B-Harness. While the A-Harness handles primary engine functions, the B-Harness is crucial for integrating auxiliary inputs, outputs, and advanced features that elevate your engine management capabilities. This meticulously crafted harness ensures reliable connectivity for additional sensors, solenoids, or custom controls, allowing you to fine-tune your vehicle's performance with unparalleled precision. Designed for seamless integration, it's a vital component for any serious enthusiast or professional tuner looking to maximize their FT550 system.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDedicated FT550 ECU Compatibility:\u003c\/b\u003e Specifically designed to integrate with the FuelTech FT550 ECU, ensuring perfect electrical and data communication for auxiliary functions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e10-Foot Length for Versatile Routing:\u003c\/b\u003e Provides ample length for integrating additional components within most engine bay configurations, offering flexibility without excess.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eB-Harness Configuration:\u003c\/b\u003e Essential for expanding your ECU's capabilities, enabling connections for auxiliary inputs\/outputs, advanced controls, and custom features.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Quality Construction:\u003c\/b\u003e Manufactured with premium automotive-grade wiring and robust connectors, built to withstand the demanding conditions of performance and racing environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eReliable Signal Transmission:\u003c\/b\u003e Engineered to deliver clean, accurate signals for all connected auxiliary devices, crucial for consistent performance and system stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e FuelTech FT550 ECU\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHarness Type:\u003c\/b\u003e B-Harness (Auxiliary Engine Control)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLength:\u003c\/b\u003e 10 feet (approximately 3 meters)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApplication:\u003c\/b\u003e Auxiliary engine management wiring, expanded ECU functions\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e 2001005571\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy This FuelTech B-Harness is Essential for Your FT550\u003c\/h3\u003e\u003cp\u003eInvesting in the FuelTech FT550 10ft B-Harness is key to fully leveraging the advanced features of your FT550 ECU. It provides the necessary infrastructure to incorporate additional sensors for data logging, control external devices like nitrous systems or water\/methanol injection, or implement complex strategies for traction control and launch control. This harness is indispensable for those who demand granular control over every aspect of their engine's operation, ensuring that every modification and tuning adjustment translates directly into enhanced performance and reliability. Elevate your engine management to the next level.\u003c\/p\u003e\u003cp\u003eFor all your high-performance automotive needs, trust GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech FT550 B-Harness 10ft \\u2014 Auxiliary Engine Control Unit Wiring\",\"description\":\"Enhance your FuelTech FT550 ECU system with this 10ft B-Harness. Essential for auxiliary functions and expanding your engine management capabilities. Order today!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"FuelTech\"},\"mpn\":\"2001005571\",\"url\":\"https:\/\/ggcracing.com\/products\/ft550-b-harness-10ft\",\"offers\":{\"@type\":\"Offer\",\"price\":\"139.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/ft550-b-harness-10ft\",\"sku\":\"KMDZ_2001005571\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"FuelTech\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=FuelTech\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"FuelTech FT550 B-Harness 10ft \\u2014 Auxiliary Engine Control Unit Wiring\",\"item\":\"https:\/\/ggcracing.com\/products\/ft550-b-harness-10ft\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the FuelTech FT550 B-Harness 10ft \\u2014 Auxiliary Engine Control Unit Wiring fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech FT550 B-Harness 10ft \\u2014 Auxiliary Engine Control Unit Wiring?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009524015188,"sku":"KMDZ_2001005571","price":153.56,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH2001005571.jpg?v=1715807916"},{"product_id":"ft550-b-harness-20ft","title":"FuelTech FT550 B-Harness 20ft Engine Wiring Harness — Universal ECU Integration","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/s_G_mkkOOds\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eExpand Your ECU Capabilities with the FT550 B-Harness\u003c\/h2\u003e\u003cp\u003eThe FuelTech FT550 B-Harness is the essential secondary wiring solution for users looking to unlock the full potential of their FT550 ECU. This 20-foot harness is designed to handle additional inputs and outputs, providing the flexibility needed for complex engine setups, including advanced data logging, staged injection, and multi-stage nitrous control. When combined with the A-Harness, this B-Harness completes the comprehensive wiring requirements for high-end racing applications.\u003c\/p\u003e\u003ch3\u003eTechnical Advantages\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Functionality:\u003c\/strong\u003e Allows for the connection of additional sensors, solenoids, and auxiliary devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Length:\u003c\/strong\u003e 20-foot design provides ample slack for routing through the firewall and chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Performance Build:\u003c\/strong\u003e Constructed with heat-resistant materials to ensure longevity in high-heat engine bays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Compatibility:\u003c\/strong\u003e Designed for seamless integration with the FuelTech FT550 ecosystem.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Signal Integrity:\u003c\/strong\u003e Minimizes resistance and interference for accurate sensor readings and actuator control.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAchieving a professional-level engine management installation requires reliable components that won't fail under pressure. The FuelTech B-Harness is engineered to meet the stringent demands of competitive motorsports, providing a clean and organized wiring solution that simplifies troubleshooting and maintenance. Whether you are running a forced induction setup or a high-compression naturally aspirated engine, this harness provides the connectivity you need for consistent performance. Find all your essential engine management accessories at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech FT550 B-Harness 20ft Engine Wiring Harness \\u2014 Universal ECU Integration\",\"description\":\"Expand your engine management capabilities with the FuelTech FT550 B-Harness 20ft. Durable, high-performance wiring for your ECU. Order today at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"FuelTech\"},\"mpn\":\"2001005572\",\"url\":\"https:\/\/ggcracing.com\/products\/ft550-b-harness-20ft\",\"offers\":{\"@type\":\"Offer\",\"price\":\"189.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/ft550-b-harness-20ft\",\"sku\":\"KMDZ_2001005572\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"FuelTech\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=FuelTech\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"FuelTech FT550 B-Harness 20ft Engine Wiring Harness \\u2014 Universal ECU Integration\",\"item\":\"https:\/\/ggcracing.com\/products\/ft550-b-harness-20ft\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the FuelTech FT550 B-Harness 20ft Engine Wiring Harness \\u2014 Universal ECU Integration fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech FT550 B-Harness 20ft Engine Wiring Harness \\u2014 Universal ECU Integration?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009524637780,"sku":"KMDZ_2001005572","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH2001005572.jpg?v=1715807941"},{"product_id":"ft450-550-sportsman-a-datalogging-harness","title":"FuelTech FT450\/550 Sportsman A-Datalogging Harness — Terminated Engine Wiring","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/UqLVBFTiUvM\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eAdvanced Datalogging for Competitive Performance\u003c\/h2\u003e\u003cp\u003eThe FuelTech FT450\/550 Sportsman A-Datalogging Harness is the ultimate wiring solution for racers who demand detailed engine analysis. This fully terminated harness is designed to streamline the installation of your ECU while providing all the necessary channels for advanced datalogging. By capturing critical engine parameters, this harness allows you to make informed tuning decisions that lead to faster lap times and increased engine longevity. It is the perfect choice for the Sportsman racer who wants professional-level data without the complexity of a custom-built harness.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminated Design:\u003c\/strong\u003e Ready for installation, significantly reducing setup time and potential wiring errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatalogging Ready:\u003c\/strong\u003e Includes pre-wired channels for essential sensors to monitor engine health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fully compatible with FuelTech FT450 and FT550 ECU systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Durability Shielding:\u003c\/strong\u003e Protects against electromagnetic interference (EMI) for clean data signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Finish:\u003c\/strong\u003e Provides a clean, organized look in the engine bay while ensuring maximum reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eData is the key to winning. With the Sportsman A-Datalogging Harness, you can monitor everything from air-fuel ratios to ignition timing with precision. This harness is built to the highest standards, ensuring that your data remains accurate even in the most demanding racing conditions. Stop struggling with messy, unreliable wiring and upgrade to a solution that works as hard as you do. Experience the difference of premium engineering with GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech FT450\/550 Sportsman A-Datalogging Harness \\u2014 Terminated Engine Wiring\",\"description\":\"Upgrade to the FuelTech Sportsman A-Datalogging Harness for FT450\/550 ECUs. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech FT450\/550 Sportsman A-Datalogging Harness \\u2014 Terminated Engine Wiring?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009526636628,"sku":"KMDZ_2002007356","price":749.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH2002007356.jpg?v=1715808021"},{"product_id":"pro600-ford-v8-complete-harness","title":"FuelTech PRO600 Ford V8 Complete Wiring Harness — Engine Management Upgrade","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/dDoYFmCV7LQ\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eProfessional-Grade Engine Wiring\u003c\/h2\u003e\u003cp\u003eTake the complexity out of your engine management installation with the FuelTech PRO600 Ford V8 Complete Harness. This harness is specifically engineered to bridge the gap between your FT600 ECU and Ford V8 engine platforms, providing a clean, reliable, and professional wiring solution. Designed for high-performance applications, this harness minimizes voltage drop and electrical interference, ensuring your ECU receives clear signals from every sensor.\u003c\/p\u003e\u003ch3\u003eHarness Highlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Specific:\u003c\/strong\u003e Tailored for Ford V8 engine configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play:\u003c\/strong\u003e Designed for seamless integration with the FT600 ECU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Materials:\u003c\/strong\u003e Automotive-grade wiring and heat-resistant loom.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Coverage:\u003c\/strong\u003e Includes all necessary connectors for engine sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Installation:\u003c\/strong\u003e Reduces build time and troubleshooting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWiring is often the most time-consuming part of an engine build. By using a pre-terminated, application-specific harness, you eliminate the guesswork and potential for wiring errors that can plague custom builds. This harness is built to withstand the rigors of racing, featuring high-quality terminals and shielding to protect against electrical noise. Whether you are building a dedicated track car or a high-end street machine, this harness provides the foundation for a reliable and powerful setup. Upgrade your engine management system with the best components from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech PRO600 Ford V8 Complete Wiring Harness \\u2014 Engine Management Upgrade\",\"description\":\"Simplify your engine management installation with the FuelTech PRO600 Ford V8 Complete Harness. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech PRO600 Ford V8 Complete Wiring Harness \\u2014 Engine Management Upgrade?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009535123540,"sku":"KMDZ_3026100077","price":1998.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH3026100077.jpg?v=1715808414"},{"product_id":"pro550-v8-complete-harness","title":"FuelTech PRO550 V8 Complete Engine Wiring Harness — FT550 ECU for GM \/ Chrysler V8","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/U1piZNTUiGE\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eEssential Wiring for Unleashing Your GM or Chrysler V8's Potential\u003c\/h2\u003e\u003cp\u003eFor serious builders and tuners running a GM or Chrysler V8 with a FuelTech FT550 ECU, the \u003cb\u003eFuelTech PRO550 V8 Complete Engine Wiring Harness\u003c\/b\u003e is the definitive solution for a clean, reliable, and high-performance electrical system. This comprehensive harness is meticulously crafted to integrate seamlessly with your FT550 ECU, providing all the necessary connections to bring your V8 engine to life with unparalleled precision and control.\u003c\/p\u003e\u003ch3\u003eEngineered for GM and Chrysler V8 with FT550\u003c\/h3\u003e\u003cp\u003eEach FuelTech PRO550 V8 harness is designed with the specific electrical requirements of GM and Chrysler V8 engines in mind. This ensures optimal signal integrity for all critical engine sensors and actuators, allowing your FT550 ECU to operate at its peak, delivering consistent power and efficiency. Say goodbye to wiring headaches and hello to a professional-grade installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eComprehensive Engine Harness:\u003c\/b\u003e All connections needed for your GM or Chrysler V8 engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFT550 ECU Compatibility:\u003c\/b\u003e Specifically designed for direct, plug-and-play integration with FuelTech FT550.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium Materials:\u003c\/b\u003e Constructed with high-quality wires and connectors for maximum durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClearly Marked Connections:\u003c\/b\u003e Facilitates straightforward installation, minimizing errors and setup time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDurable Sheathing:\u003c\/b\u003e Protects against abrasion, heat, and environmental elements in demanding applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eMaximize Your V8's Performance and Reliability\u003c\/h3\u003e\u003cp\u003eA high-quality wiring harness is fundamental to extracting maximum performance from your engine management system. The PRO550 V8 Complete Harness ensures that your FT550 ECU receives accurate data and sends precise commands, leading to optimized fuel maps, ignition timing, and overall engine responsiveness. This translates into more horsepower, greater torque, and enhanced reliability for your GM or Chrysler V8.\u003c\/p\u003e\u003ch3\u003eSpecifications:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Complete Engine Control Harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eECU Compatibility:\u003c\/b\u003e FuelTech FT550\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEngine Application:\u003c\/b\u003e GM V8, Chrysler V8\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e 3026100191\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Trust FuelTech for Your V8 Engine Wiring?\u003c\/h3\u003e\u003cp\u003eFuelTech stands at the forefront of automotive performance electronics, and their PRO550 V8 Complete Harness exemplifies this commitment. It offers a superior wiring solution that not only simplifies installation but also guarantees the robust electrical foundation your high-performance GM or Chrysler V8 deserves. Power your project with confidence and precision. Explore the full range of FuelTech solutions at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech PRO550 V8 Complete Engine Wiring Harness \\u2014 FT550 ECU for GM \/ Chrysler V8\",\"description\":\"Power your GM or Chrysler V8 with the FuelTech PRO550 Complete Engine Harness. Perfect for FT550 ECU, ensuring peak performance and reliability. Buy now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"FuelTech\"},\"mpn\":\"3026100191\",\"url\":\"https:\/\/ggcracing.com\/products\/pro550-v8-complete-harness\",\"offers\":{\"@type\":\"Offer\",\"price\":\"1199.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/pro550-v8-complete-harness\",\"sku\":\"KMDZ_3026100191\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"FuelTech\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=FuelTech\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"FuelTech PRO550 V8 Complete Engine Wiring Harness \\u2014 FT550 ECU for GM \/ Chrysler V8\",\"item\":\"https:\/\/ggcracing.com\/products\/pro550-v8-complete-harness\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the FuelTech PRO550 V8 Complete Engine Wiring Harness \\u2014 FT550 ECU for GM \/ Chrysler  fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech PRO550 V8 Complete Engine Wiring Harness \\u2014 FT550 ECU for GM \/ Chrysler ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009535713364,"sku":"KMDZ_3026100191","price":1199.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH3026100191.jpg?v=1715808461"},{"product_id":"pro550-ford-v8-complete-harness","title":"FuelTech PRO550 Complete Engine Harness — Fits Ford V8 Engines","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/U1piZNTUiGE\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eOptimize Your FuelTech FT550 \u0026amp; Ford V8 Connection\u003c\/h2\u003e\u003cp\u003eThe \u003cb\u003eFuelTech PRO550 Ford V8 Complete Engine Harness\u003c\/b\u003e is the definitive solution for integrating your FT550 ECU with your Ford V8 engine. This comprehensive wiring harness is expertly designed to ensure every sensor, actuator, and ignition component communicates flawlessly with your engine management system. Built with meticulous attention to detail, it provides a robust and reliable electrical backbone, crucial for maximizing the performance and efficiency of your Ford V8.\u003c\/p\u003e\u003ch3\u003eEngineered for Reliability and Easy Installation\u003c\/h3\u003e\u003cp\u003eConstructed from premium, automotive-grade materials, the PRO550 harness offers superior resistance to heat, vibration, and fluids, guaranteeing long-term durability in demanding engine bay environments. Its plug-and-play design significantly reduces installation complexity and time, allowing for a cleaner, more professional setup. Each wire is precisely routed and clearly labeled, minimizing potential errors and ensuring a hassle-free experience for installers and tuners alike.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e FuelTech FT550 ECU\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEngine Fitment:\u003c\/b\u003e Ford V8 Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Complete Engine Control Harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConstruction:\u003c\/b\u003e High-quality, durable automotive wiring\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBenefit:\u003c\/b\u003e Streamlined installation, enhanced signal integrity\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApplication:\u003c\/b\u003e Performance upgrades for Ford V8 platforms\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFoundation for High-Performance Ford V8s\u003c\/h3\u003e\u003cp\u003eA dedicated, high-quality engine harness is paramount for extracting consistent and optimal performance from your FuelTech FT550 ECU. This PRO550 harness ensures accurate data transmission from all engine sensors, enabling precise control over fuel delivery, ignition timing, and auxiliary functions. Invest in the reliability and performance that only a purpose-built FuelTech harness can provide for your Ford V8 project, setting the stage for unparalleled power and control.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech PRO550 Complete Engine Harness \\u2014 Fits Ford V8 Engines\",\"description\":\"Connect your FuelTech FT550 ECU effortlessly with the complete PRO550 Engine Harness for Ford V8 engines. Engineered for peak performance. Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"FuelTech\"},\"mpn\":\"3026100192\",\"url\":\"https:\/\/ggcracing.com\/products\/pro550-ford-v8-complete-harness\",\"offers\":{\"@type\":\"Offer\",\"price\":\"1249.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/pro550-ford-v8-complete-harness\",\"sku\":\"KMDZ_3026100192\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"FuelTech\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=FuelTech\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"FuelTech PRO550 Complete Engine Harness \\u2014 Fits Ford V8 Engines\",\"item\":\"https:\/\/ggcracing.com\/products\/pro550-ford-v8-complete-harness\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the FuelTech PRO550 Complete Engine Harness \\u2014 Fits Ford V8 Engines fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech PRO550 Complete Engine Harness \\u2014 Fits Ford V8 Engines?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009536335956,"sku":"KMDZ_3026100192","price":1249.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH3026100192.jpg?v=1715808490"},{"product_id":"pro600-v8-complete-wiring-harness","title":"FuelTech PRO600 V8 Complete Wiring Harness — GM\/Chrysler V8 Engine Management","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout FuelTech\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eFuelTech engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FuelTech lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/dDoYFmCV7LQ\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eUltimate Engine Management Connectivity\u003c\/h2\u003e\u003cp\u003eThe FuelTech PRO600 V8 Complete Wiring Harness is the ultimate solution for integrating your PRO600 Gen III ECU with GM or Chrysler V8 engines. This harness is meticulously designed to provide a factory-like fit with race-grade performance. By utilizing high-quality connectors and shielded wiring, this harness ensures that your engine management system operates with maximum efficiency, free from the common electrical gremlins found in DIY wiring jobs.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Optimized for GM and Chrysler V8 platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Engineering:\u003c\/strong\u003e Designed for the PRO600 Gen III ECU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Built to endure extreme heat and vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean Installation:\u003c\/strong\u003e Pre-terminated connectors for a professional look.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Signal Integrity:\u003c\/strong\u003e Minimizes interference for accurate sensor readings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are performing an LS swap or building a high-horsepower Mopar engine, this harness provides the robust electrical backbone your build deserves. It simplifies the installation process, allowing you to focus on tuning and performance rather than troubleshooting electrical shorts. With high-quality materials and a design that prioritizes reliability, this harness is a must-have for any serious engine management upgrade. Trust in the precision of FuelTech engineering to keep your engine running strong. Explore our full range of engine management solutions and wiring accessories at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular FuelTech products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/sparkpro-8-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech SparkPRO-8 Wiring Harness 6.5ft — Ignition Module Connection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/wb-o2-nano-blank-harness-6-5ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech WB-O2 NANO Blank Gauge Harness 6.5ft — Bosch LSU4.2 O2 Sensor Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Control Harness 10ft — Blank, Unterminated\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft600-harness-20ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT600\/FT700 Engine Wiring Harness 20ft — Universal Blank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ft450-550-a-harness-10ft\" style=\"color:#0066cc;text-decoration:none;\"\u003eFuelTech FT450\/FT550 A-Harness 10ft — Engine Control Wiring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"FuelTech PRO600 V8 Complete Wiring Harness \\u2014 GM\/Chrysler V8 Engine Management\",\"description\":\"Get your GM or Chrysler V8 running perfectly with the FuelTech PRO600 Complete Wiring Harness. Professional quality and fitment. Buy at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"FuelTech\"},\"mpn\":\"3026109080\",\"url\":\"https:\/\/ggcracing.com\/products\/pro600-v8-complete-wiring-harness\",\"offers\":{\"@type\":\"Offer\",\"price\":\"1699.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/pro600-v8-complete-wiring-harness\",\"sku\":\"KMDZ_3026109080\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"FuelTech\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=FuelTech\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"FuelTech PRO600 V8 Complete Wiring Harness \\u2014 GM\/Chrysler V8 Engine Management\",\"item\":\"https:\/\/ggcracing.com\/products\/pro600-v8-complete-wiring-harness\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the FuelTech PRO600 V8 Complete Wiring Harness \\u2014 GM\/Chrysler V8 Engine Management fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for FuelTech?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the FuelTech PRO600 V8 Complete Wiring Harness \\u2014 GM\/Chrysler V8 Engine Management?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":41009536401492,"sku":"KMDZ_3026109080","price":1798.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/FTH3026109080.jpg?v=1715808513"},{"product_id":"holleymain-wire-harness-hemi-late-w-tps-iac","title":"Holley Main Engine Wiring Harness — Fits Gen III Hemi Drive-By-Cable","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/pEqcCIG9Tr4\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eSimplified Wiring for Gen III Hemi Swaps\u003c\/h2\u003e\u003cp\u003eTackling a Mopar Gen III Hemi swap can be a complex task, but the Holley Main Engine Wiring Harness makes the electrical integration seamless. Specifically designed for drive-by-cable throttle body setups, this harness includes pre-terminated connections for your TPS (Throttle Position Sensor) and IAC (Idle Air Control) valve. This kit eliminates the guesswork and tedious soldering usually associated with custom engine swaps, allowing you to focus on the mechanical aspects of your project.\u003c\/p\u003e\u003ch3\u003eEngineered for Reliability\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect Fitment:\u003c\/strong\u003e Tailored for Mopar Gen III Hemi engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive-By-Cable Ready:\u003c\/strong\u003e Includes dedicated connectors for TPS and IAC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Terminals:\u003c\/strong\u003e Factory-style connectors ensure a secure, weather-resistant fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Routing:\u003c\/strong\u003e Optimized length and layout for a clean, professional engine bay.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis harness is built to withstand the harsh environment of an engine bay, featuring high-temperature insulation and reinforced loom to protect against heat and abrasion. By providing a clean, reliable signal path for your engine's critical sensors, this harness helps prevent common electrical gremlins that often plague custom builds. Whether you are installing a crate engine or a junkyard find, this harness provides the foundation for a reliable and high-performing setup. Get your Hemi swap running smoothly and efficiently with this premium wiring solution from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-500cfm-street-avenger\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 500CFM Street Avenger 2-Barrel Carburetor — Aluminum Finish\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-750cfm-4160-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4160 Series Performance Carburetor 750CFM — Square Bore Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/750-cfm-4150-hp-carb-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 750 CFM 4150 HP Double Pumper Carburetor 4-Barrel — Mechanical Secondary\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/competition-carburetor-1250cfm-4500-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4500 Series Dominator 1250 CFM 4-Barrel Competition Carburetor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/650-cfm-classic-hp-carb-4150-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley Classic HP 4150 650 CFM 4-Barrel Carburetor — Mechanical Secondary Square Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley Main Engine Wiring Harness \\u2014 Fits Gen III Hemi Drive-By-Cable\",\"description\":\"Simplify your Gen III Hemi swap with this Holley main engine wiring harness. Designed for drive-by-cable setups with TPS \u0026 IAC. Shop at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Holley\"},\"mpn\":\"558-116\",\"url\":\"https:\/\/ggcracing.com\/products\/holleymain-wire-harness-hemi-late-w-tps-iac\",\"offers\":{\"@type\":\"Offer\",\"price\":\"819.95\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/holleymain-wire-harness-hemi-late-w-tps-iac\",\"sku\":\"BBVL_558-116\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Holley\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Holley\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Holley Main Engine Wiring Harness \\u2014 Fits Gen III Hemi Drive-By-Cable\",\"item\":\"https:\/\/ggcracing.com\/products\/holleymain-wire-harness-hemi-late-w-tps-iac\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Holley Main Engine Wiring Harness \\u2014 Fits Gen III Hemi Drive-By-Cable fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley Main Engine Wiring Harness \\u2014 Fits Gen III Hemi Drive-By-Cable?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":41065979740244,"sku":"BBVL_558-116","price":849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/HLY558-116.jpg?v=1716686099"},{"product_id":"holleysniper-2-tp-sniper-1-adapter-wire-harness","title":"Holley Sniper EFI 1 to Sniper EFI 2 Adapter Wire Harness — Upgrade Kit","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/7lCRoQHNm6A\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eSeamlessly Upgrade to Sniper EFI 2\u003c\/h2\u003e\u003cp\u003eTransitioning from your original Sniper EFI system to the advanced Sniper EFI 2 has never been easier. The Holley Sniper 1 to Sniper 2 Adapter Wire Harness is precision-engineered to bridge the gap between your existing wiring and the latest generation of throttle body technology. This adapter eliminates the need for complex rewiring, saving you time and ensuring a secure, reliable connection for your fuel injection system.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Adapter Harness?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Fitment:\u003c\/strong\u003e Designed for a plug-and-play transition between Sniper 1 and Sniper 2 systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Installation:\u003c\/strong\u003e No need to cut or splice factory wires, maintaining harness integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Quality:\u003c\/strong\u003e Built to Holley’s rigorous standards for heat resistance and electrical conductivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Performance:\u003c\/strong\u003e Ensures consistent signal transmission for optimal fuel delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are looking to take advantage of the improved features of the Sniper 2 or simply replacing an aging component, this adapter harness is the perfect solution for a clean, professional install. 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Experience the best in EFI upgrade solutions at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-500cfm-street-avenger\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 500CFM Street Avenger 2-Barrel Carburetor — Aluminum Finish\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/performance-carburetor-750cfm-4160-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4160 Series Performance Carburetor 750CFM — Square Bore Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/750-cfm-4150-hp-carb-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 750 CFM 4150 HP Double Pumper Carburetor 4-Barrel — Mechanical Secondary\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/competition-carburetor-1250cfm-4500-series\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley 4500 Series Dominator 1250 CFM 4-Barrel Competition Carburetor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/650-cfm-classic-hp-carb-4150-double-pumper\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley Classic HP 4150 650 CFM 4-Barrel Carburetor — Mechanical Secondary Square Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley Sniper EFI 1 to Sniper EFI 2 Adapter Wire Harness \\u2014 Upgrade Kit\",\"description\":\"Upgrade your fuel injection system easily with the Holley Sniper 1 to Sniper 2 Adapter Wire Harness. 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At GGCRACING we stock the full Power Master lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/NDcn7jGUla4\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eEffortless Alternator Wiring Conversion\u003c\/h2\u003e\u003cp\u003eWhen swapping alternators, the biggest challenge is often the connector compatibility. The Power Master Harness Adapter for CS130D to CS130 alternators is designed to bridge the gap between these two popular charging system styles. This adapter ensures that your electrical system remains stable and reliable, providing a factory-style connection that prevents voltage drops and loose contacts.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Harness Adapter?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Fitment:\u003c\/strong\u003e Designed specifically for the CS130D to CS130 transition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Installation:\u003c\/strong\u003e No need for cutting, stripping, or crimping new wires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Reliability:\u003c\/strong\u003e High-quality materials prevent heat-related degradation of the connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Finish:\u003c\/strong\u003e Provides a clean, OEM-quality look under your hood.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are performing a routine replacement or a custom performance upgrade, using the correct harness adapter is critical for the longevity of your alternator. A poor connection can lead to flickering lights, battery charging issues, and potential damage to your voltage regulator. By utilizing this Power Master adapter, you ensure that your charging system operates at peak efficiency from the moment you turn the key. Trust your vehicle's electrical integrity to the high-quality components available at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Power Master products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/power-masterbattery-terminal-boot\" style=\"color:#0066cc;text-decoration:none;\"\u003ePower Master Battery Terminal Boot — Red Top Post Cover\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/power-masterpulley-1v-black-5-8-wide-for-powergen\" style=\"color:#0066cc;text-decoration:none;\"\u003ePower Master Alternator Pulley 1V Black — 2.6in V-Belt Pulley\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/power-master6-groove-serpentine-pulley-49mm-od\" style=\"color:#0066cc;text-decoration:none;\"\u003ePower Master 6-Groove Serpentine Alternator Pulley 49mm OD — Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/power-masterharness-adapter-10si-to-cs130-alternator\" style=\"color:#0066cc;text-decoration:none;\"\u003ePower Master Harness Adapter — 10SI to CS130D Alternator Conversion\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/power-masterwaterpump-drive-kit-for-alternator-serpentine\" style=\"color:#0066cc;text-decoration:none;\"\u003ePower Master Serpentine Water Pump Drive Kit — Universal Performance Pulley System\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Power Master Harness Adapter \\u2014 CS130D to CS130 Alternator Conversion\",\"description\":\"Convert your alternator wiring with the Power Master CS130D to CS130 Harness Adapter. Reliable, plug-and-play solution. Shop the best parts at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Power Master\"},\"mpn\":\"160\",\"url\":\"https:\/\/ggcracing.com\/products\/power-masterharness-adapter-cs130d-to-cs130\",\"offers\":{\"@type\":\"Offer\",\"price\":\"32.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/power-masterharness-adapter-cs130d-to-cs130\",\"sku\":\"BCTD_160\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Power Master\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Power+Master\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Power Master Harness Adapter \\u2014 CS130D to CS130 Alternator Conversion\",\"item\":\"https:\/\/ggcracing.com\/products\/power-masterharness-adapter-cs130d-to-cs130\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Power Master Harness Adapter \\u2014 CS130D to CS130 Alternator Conversion fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Power Master?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Power Master Harness Adapter \\u2014 CS130D to CS130 Alternator Conversion?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Power Master","offers":[{"title":"Default Title","offer_id":41119914491988,"sku":"BCTD_160","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/PWM160.jpg?v=1717278158"},{"product_id":"ict-billetharness-adapter-ls-gen3-to-gen4-map-sensor","title":"ICT Billet MAP Sensor Harness Adapter Gen 3 to Gen 4 — Fits GM LS Engines","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout ICT Billet\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eICT Billet engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full ICT Billet lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/aT7EJBBoPPM\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eSimplify Your LS Engine Swap\u003c\/h2\u003e\u003cp\u003eThe ICT Billet MAP Sensor Harness Adapter is the perfect solution for builders integrating Gen 4 intake manifolds or sensors onto a Gen 3 LS engine harness. This adapter bridges the gap between different connector styles, allowing you to use modern Gen 4 MAP sensors without modifying your original engine wiring harness. It is a must-have for any LS enthusiast looking to streamline their intake and sensor setup.\u003c\/p\u003e\u003ch3\u003eFeatures and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Compatibility:\u003c\/strong\u003e Allows use of Gen 4 MAP sensors on Gen 3 wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Design:\u003c\/strong\u003e Installs in seconds with no cutting or splicing required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Materials:\u003c\/strong\u003e Features OEM-style connectors for a secure, weather-resistant fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngineered for Performance:\u003c\/strong\u003e Ensures accurate sensor readings for precise engine tuning.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAccurate MAP sensor data is vital for proper engine management and fuel mapping. By using this high-quality adapter, you ensure that your ECU receives the correct signal, preventing potential tuning issues and engine performance degradation. Whether you are performing a simple intake manifold upgrade or a full engine swap, this adapter saves you time and ensures a clean, professional installation. Trust in the durability and precision of ICT Billet components for your next project. Explore our full range of engine wiring solutions and performance parts at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular ICT Billet products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetford-7-3l-godzilla-motor-mounts-universal\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet Ford 7.3L Godzilla Motor Mounts — Universal Swap Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetan-radiator-hose-kit-electric-water-pump\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet LS-Series AN Radiator Hose Kit — Electric Water Pump\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetuniversal-ls-lt-heater-core-hose-set\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet Universal LS \/ LT Heater Core Hose Set — 5\/8in \u0026amp; 3\/4in\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetuniversal-spark-plug-wir-e-set-remote-coil\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet Universal Spark Plug Wire Set — LS \/ LT Remote Coil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetls-oil-dipstick-tube-plu-g-for-gen-3-4-5-ls1\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet LS Oil Dipstick Tube Plug - Gen 3, 4, 5 LS1 - Aluminum Natural\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"ICT Billet MAP Sensor Harness Adapter Gen 3 to Gen 4 \\u2014 Fits GM LS Engines\",\"description\":\"Easily adapt your Gen 3 harness to a Gen 4 MAP sensor with the ICT Billet adapter. Perfect for LS engine swaps and upgrades. Shop now at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"ICT Billet\"},\"mpn\":\"WAMAP31-6\",\"url\":\"https:\/\/ggcracing.com\/products\/ict-billetharness-adapter-ls-gen3-to-gen4-map-sensor\",\"offers\":{\"@type\":\"Offer\",\"price\":\"43.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/ict-billetharness-adapter-ls-gen3-to-gen4-map-sensor\",\"sku\":\"HXXG_WAMAP31-6\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"ICT Billet\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=ICT+Billet\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"ICT Billet MAP Sensor Harness Adapter Gen 3 to Gen 4 \\u2014 Fits GM LS Engines\",\"item\":\"https:\/\/ggcracing.com\/products\/ict-billetharness-adapter-ls-gen3-to-gen4-map-sensor\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the ICT Billet MAP Sensor Harness Adapter Gen 3 to Gen 4 \\u2014 Fits GM LS Engines fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for ICT Billet?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the ICT Billet MAP Sensor Harness Adapter Gen 3 to Gen 4 \\u2014 Fits GM LS Engines?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"ICT Billet","offers":[{"title":"Default Title","offer_id":41120554549332,"sku":"HXXG_WAMAP31-6","price":50.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ICTWAMAP31-6.jpg?v=1717323498"},{"product_id":"ict-billetwire-extension-48in-ls-c-mp-camshaft-position-sen","title":"ICT Billet Camshaft Position Sensor Wiring Extension 48in — Fits GM LS-Series Engines","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout ICT Billet\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eICT Billet engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full ICT Billet lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eReliable Camshaft Sensor Extensions for LS Builds\u003c\/h2\u003e\u003cp\u003eThe \u003cb\u003eICT Billet Camshaft Position Sensor Wiring Extension\u003c\/b\u003e is the perfect solution for engine swaps or custom wiring configurations where the factory harness falls short. Measuring 48 inches long, this extension is built using OEM-grade tooling to ensure a secure, weather-resistant connection for your GM LS-Series engine's camshaft position sensor.\u003c\/p\u003e\u003ch3\u003eWhy Choose ICT Billet Extensions?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eExtended Length:\u003c\/b\u003e 48 inches provides ample slack for custom intake manifolds or relocated sensor positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Quality:\u003c\/b\u003e Manufactured with factory-style connectors for a perfect, reliable fit every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSignal Integrity:\u003c\/b\u003e High-quality copper wiring prevents signal noise, ensuring accurate cam timing data to the ECU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEasy Installation:\u003c\/b\u003e Simple plug-and-play design requires no cutting or soldering of your factory harness.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eProper cam sensor data is critical for the correct operation of your LS engine, especially in high-performance or forced-induction applications. A faulty or loose connection can lead to erratic timing and poor engine performance. By using this ICT Billet extension, you ensure that your sensor signal remains clean and consistent, regardless of your engine bay layout. Whether you are running a custom turbo setup or a unique intake manifold, this harness extension provides the reach you need to finish your project right. Find all your essential LS swap components at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular ICT Billet products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetford-7-3l-godzilla-motor-mounts-universal\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet Ford 7.3L Godzilla Motor Mounts — Universal Swap Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetan-radiator-hose-kit-electric-water-pump\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet LS-Series AN Radiator Hose Kit — Electric Water Pump\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetuniversal-ls-lt-heater-core-hose-set\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet Universal LS \/ LT Heater Core Hose Set — 5\/8in \u0026amp; 3\/4in\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetuniversal-spark-plug-wir-e-set-remote-coil\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet Universal Spark Plug Wire Set — LS \/ LT Remote Coil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ict-billetls-oil-dipstick-tube-plu-g-for-gen-3-4-5-ls1\" style=\"color:#0066cc;text-decoration:none;\"\u003eICT Billet LS Oil Dipstick Tube Plug - Gen 3, 4, 5 LS1 - Aluminum Natural\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"ICT Billet Camshaft Position Sensor Wiring Extension 48in \\u2014 Fits GM LS-Series Engines\",\"description\":\"Need extra length for your LS cam sensor? The ICT Billet 48-inch wiring extension offers OEM-quality fitment. Order now at GGCRACING for fast shipping.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"ICT Billet\"},\"mpn\":\"WECAM30-48\",\"url\":\"https:\/\/ggcracing.com\/products\/ict-billetwire-extension-48in-ls-c-mp-camshaft-position-sen\",\"offers\":{\"@type\":\"Offer\",\"price\":\"43.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/ict-billetwire-extension-48in-ls-c-mp-camshaft-position-sen\",\"sku\":\"HXXG_WECAM30-48\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"ICT Billet\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=ICT+Billet\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"ICT Billet Camshaft Position Sensor Wiring Extension 48in \\u2014 Fits GM LS-Series Engines\",\"item\":\"https:\/\/ggcracing.com\/products\/ict-billetwire-extension-48in-ls-c-mp-camshaft-position-sen\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the ICT Billet Camshaft Position Sensor Wiring Extension 48in \\u2014 Fits GM LS-Series En fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for ICT Billet?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the ICT Billet Camshaft Position Sensor Wiring Extension 48in \\u2014 Fits GM LS-Series En?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"ICT Billet","offers":[{"title":"Default Title","offer_id":41120554844244,"sku":"HXXG_WECAM30-48","price":50.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ICTWECAM30-48.jpg?v=1717323577"},{"product_id":"allstar-performance-solenoid-wiring-kit","title":"Allstar Performance Solenoid Wiring Kit — Universal Ford Style Starter Solenoid Wiring","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Allstar Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eAllstar Performance is America's leading circle-track racing parts manufacturer. From aluminum panels and chassis components to brake hardware, steering boxes, and oval-track shock packages — every Allstar product is born from sprint car and modified racing experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/QZjwukQDlog\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eReliable Electrical Connections for Your Starter System\u003c\/h2\u003e\u003cp\u003eEnsure your vehicle's starting system operates at peak performance with the Allstar Performance Solenoid Wiring Kit. Designed specifically for enthusiasts who demand reliability, this kit provides all the essential components needed to wire Ford-style starter solenoids efficiently. Whether you are building a custom race car or restoring a classic, this kit simplifies the installation process while ensuring a secure, high-conductivity connection.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComprehensive kit includes premium-grade wire and terminals\u003c\/li\u003e\n\u003cli\u003eEngineered for seamless compatibility with Ford-style starter solenoids\u003c\/li\u003e\n\u003cli\u003eDurable construction withstands harsh under-hood environments\u003c\/li\u003e\n\u003cli\u003eSimplifies complex wiring tasks for a cleaner engine bay\u003c\/li\u003e\n\u003cli\u003ePerfect for custom hot rods, drag cars, and street performance vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eProper electrical grounding and power delivery are critical for consistent engine starts. By utilizing this professional-grade wiring kit, you eliminate common points of failure associated with aging or poorly installed electrical components. The kit is designed to handle the high current demands of high-torque starters, providing peace of mind during every ignition cycle. Trust the quality of Allstar Performance to keep your electrical system robust and dependable. For all your high-performance automotive electrical needs, choose GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Allstar Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/asphalt-tire-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Asphalt Tire Setup Log Book — 50 Sheet Pad\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/circle-track-set-up-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Circle Track Set-Up Book - Chassis Setup Chart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-8pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 8 Pack Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-40pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 40 Pack Bulk Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-spoon-24in-straight-w-round-end\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance 24in Straight Tire Spoon w\/ Round End — Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Allstar Performance Solenoid Wiring Kit \\u2014 Universal Ford Style Starter Solenoid Wiring\",\"description\":\"Upgrade your electrical system with the Allstar Performance Solenoid Wiring Kit. Includes high-quality terminals and wire for Ford-style solenoids. Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Allstar Performance\"},\"mpn\":\"ALL76201\",\"url\":\"https:\/\/ggcracing.com\/products\/allstar-performance-solenoid-wiring-kit\",\"offers\":{\"@type\":\"Offer\",\"price\":\"24.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/allstar-performance-solenoid-wiring-kit\",\"sku\":\"DNLF_ALL76201\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Allstar Performance\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Allstar+Performance\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Allstar Performance Solenoid Wiring Kit \\u2014 Universal Ford Style Starter Solenoid Wiring\",\"item\":\"https:\/\/ggcracing.com\/products\/allstar-performance-solenoid-wiring-kit\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Allstar Performance Solenoid Wiring Kit \\u2014 Universal Ford Style Starter Solenoid  fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Allstar Performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Allstar Performance Solenoid Wiring Kit \\u2014 Universal Ford Style Starter Solenoid ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Allstar Performance","offers":[{"title":"Default Title","offer_id":41351295533140,"sku":"DNLF_ALL76201","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ALL76201.jpg?v=1719181098"},{"product_id":"jms-wiring-extension-mass-air-05-16-mustang","title":"JMS Mass Air Flow Sensor Wiring Extension — Fits 2005-2016 Ford Mustang","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout JMS\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eJMS engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full JMS lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/ZJhrcdq4hzM\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eReliable Connection for Your MAF Sensor\u003c\/h2\u003e\u003cp\u003eWhen upgrading your intake system or relocating your Mass Air Flow (MAF) sensor on your 2005-2016 Ford Mustang, factory wiring often falls short. The JMS Mass Air Flow Sensor Wiring Extension provides the extra length you need for a clean, professional installation without compromising signal integrity. Engineered for durability and a perfect fit, this harness extension ensures your MAF sensor communicates accurately with your engine control unit.\u003c\/p\u003e\u003ch3\u003eWhy Choose JMS Wiring Extensions?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect Fitment:\u003c\/strong\u003e Designed specifically for 2005-2016 Ford Mustang applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction:\u003c\/strong\u003e Built with premium materials to resist heat, vibration, and moisture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play:\u003c\/strong\u003e Simplifies installation when relocating sensors or upgrading intake manifolds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Integrity:\u003c\/strong\u003e Maintains factory-spec electrical conductivity for accurate sensor readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatility:\u003c\/strong\u003e Ideal for custom builds, supercharger installations, and cold air intake setups.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eProper sensor placement is critical for optimal engine performance and fuel efficiency. Don't let short, stretched wires cause connection issues or engine codes. This JMS wiring extension provides the necessary slack to ensure your sensor is positioned exactly where it needs to be for maximum airflow measurement accuracy. Whether you are a weekend mechanic or a professional tuner, this harness is a must-have for any intake modification project. Find this and more high-quality electrical components at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular JMS products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/jms-boostmax-module-ford-10-16-ecoboost-1-6-2-0l\" style=\"color:#0066cc;text-decoration:none;\"\u003eJMS BoostMAX Module 1.6L\/2.0L EcoBoost — Fits 2010-2016 Ford Vehicles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/jms-boostmax-module-ford-10-16-ecoboost-3-5l\" style=\"color:#0066cc;text-decoration:none;\"\u003eJMS BoostMAX Module 3.5L EcoBoost — Fits 2010-2016 Ford Vehicles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/jms-fuelmax-fuel-pump-voltage-booster-v2\" style=\"color:#0066cc;text-decoration:none;\"\u003eJMS FuelMAX Fuel Pump Voltage Booster V2 — Universal Splice-In Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/jms-fuelmax-fuel-pump-volt-voltage-booster-v2\" style=\"color:#0066cc;text-decoration:none;\"\u003eJMS FuelMAX V2 Voltage Booster — Fits 2008-15 Cadillac CTS, 2010-15 Camaro, 2008-13 Corvet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/jms-fuelmax-fuel-pump-voltage-booster-v2-1\" style=\"color:#0066cc;text-decoration:none;\"\u003eJMS FuelMAX V2 Fuel Pump Voltage Booster — Fits 2015-2016 Ford Mustang\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"JMS Mass Air Flow Sensor Wiring Extension \\u2014 Fits 2005-2016 Ford Mustang\",\"description\":\"Extend your Mass Air Flow sensor reach with the JMS Wiring Extension for 2005-2016 Ford Mustangs. High-quality, reliable connection. Buy at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"JMS\"},\"mpn\":\"J0514EXT\",\"url\":\"https:\/\/ggcracing.com\/products\/jms-wiring-extension-mass-air-05-16-mustang\",\"offers\":{\"@type\":\"Offer\",\"price\":\"48.75\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/jms-wiring-extension-mass-air-05-16-mustang\",\"sku\":\"GNQV_J0514EXT\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"JMS\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=JMS\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"JMS Mass Air Flow Sensor Wiring Extension \\u2014 Fits 2005-2016 Ford Mustang\",\"item\":\"https:\/\/ggcracing.com\/products\/jms-wiring-extension-mass-air-05-16-mustang\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the JMS Mass Air Flow Sensor Wiring Extension \\u2014 Fits 2005-2016 Ford Mustang fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for JMS?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the JMS Mass Air Flow Sensor Wiring Extension \\u2014 Fits 2005-2016 Ford Mustang?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"JMS","offers":[{"title":"Default Title","offer_id":41363865763924,"sku":"GNQV_J0514EXT","price":48.75,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/JMSJ0514EXT.jpg?v=1719522633"},{"product_id":"daytona-sensor-smartspark-ls2-ls7-remote-mnt-wire-harness","title":"Daytona Sensor SmartSpark LS2\/LS7 Remote Mount Wire Harness","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Daytona Sensor\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eDaytona Sensor engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Daytona Sensor lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/ydCKM8-X7xQ\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eReliable Ignition Connectivity for GM LS Engines\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eDaytona Sensor SmartSpark Remote Mount Wire Harness\u003c\/strong\u003e is the essential link for your LS2 or LS7 ignition system. Designed to provide a clean, secure connection, this harness simplifies the installation of your SmartSpark ignition components, ensuring optimal signal integrity and engine performance.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Harness?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specifically engineered for GM LS2 and LS7 engine platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Mount Design:\u003c\/strong\u003e Allows for flexible placement of the ignition controller away from engine heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e High-quality wiring and connectors designed to withstand harsh under-hood environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e Minimizes voltage drop and electrical interference for a stronger spark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEase of Install:\u003c\/strong\u003e Plug-and-play style connectivity for the SmartSpark system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhen tuning your LS engine for maximum output, electrical reliability is just as important as mechanical strength. This harness ensures that your ignition signals are delivered without interruption, preventing misfires and optimizing combustion efficiency. Whether you are running a high-revving track car or a street-strip beast, the Daytona Sensor harness provides the peace of mind that your ignition system is wired for success. Experience the difference in ignition stability with high-performance parts sourced from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Daytona Sensor products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/daytona-sensor-cd-1-ignition-system-kit\" style=\"color:#0066cc;text-decoration:none;\"\u003eDaytona Sensor CD-1 Ignition System Kit — High Performance Spark Control\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/daytona-sensor-cd-1-capacitive-discharg-e-ignition-system-kit\" style=\"color:#0066cc;text-decoration:none;\"\u003eDaytona Sensor CD-1 Capacitive Discharge Ignition Box — Performance Spark\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/daytona-sensor-usb-interface-w-6ft-cable-cdrom-software\" style=\"color:#0066cc;text-decoration:none;\"\u003eDaytona Sensor USB Interface Cable — For CD-1 and SmartSpark Systems\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/daytona-sensor-cd-1-marine-ignition-system-kit\" style=\"color:#0066cc;text-decoration:none;\"\u003eDaytona Sensor CD-1 Marine Ignition System Kit — High-Output CD Ignition\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/daytona-sensor-cd-1-marine-capacitive-discharge-ignition-kit\" style=\"color:#0066cc;text-decoration:none;\"\u003eDaytona Sensor CD-1 Marine Capacitive Discharge Ignition Kit — Compact Marine Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Daytona Sensor SmartSpark LS2\/LS7 Remote Mount Wire Harness\",\"description\":\"Optimize your ignition system with the Daytona Sensor SmartSpark LS2\/LS7 Remote Mount Wire Harness. High-quality wiring for GM LS engines at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Daytona Sensor\"},\"mpn\":\"119005\",\"url\":\"https:\/\/ggcracing.com\/products\/daytona-sensor-smartspark-ls2-ls7-remote-mnt-wire-harness\",\"offers\":{\"@type\":\"Offer\",\"price\":\"241.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/daytona-sensor-smartspark-ls2-ls7-remote-mnt-wire-harness\",\"sku\":\"GNPG_119005\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Daytona Sensor\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Daytona+Sensor\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Daytona Sensor SmartSpark LS2\/LS7 Remote Mount Wire Harness\",\"item\":\"https:\/\/ggcracing.com\/products\/daytona-sensor-smartspark-ls2-ls7-remote-mnt-wire-harness\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Daytona Sensor SmartSpark LS2\/LS7 Remote Mount Wire Harness fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Daytona Sensor?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Daytona Sensor SmartSpark LS2\/LS7 Remote Mount Wire Harness?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Daytona Sensor","offers":[{"title":"Default Title","offer_id":41442707636308,"sku":"GNPG_119005","price":241.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/DAY119005.jpg?v=1721518529"}],"url":"https:\/\/ggcracing.com\/en-co\/collections\/engine-wiring-harnesses\/closeout.oembed","provider":"GGCRACING INC","version":"1.0","type":"link"}