{"title":"FuelTech Harnesses, Adapters \u0026 Patch Harness Systems","description":"\u003ch1 data-start=\"858\" data-end=\"912\"\u003eFuelTech Harnesses, Adapters \u0026amp; Patch Harness Systems\u003c\/h1\u003e\n\u003cp data-start=\"914\" data-end=\"1062\"\u003eVTEC Innovations supplies professional FuelTech harness systems engineered for complete standalone ECU integration and platform-specific adaptation.\u003c\/p\u003e\n\u003cp data-start=\"1064\" data-end=\"1205\"\u003eThis collection includes full engine harnesses, patch harnesses, and adapter solutions designed to support structured FuelTech installations.\u003c\/p\u003e\n\u003chr data-start=\"1207\" data-end=\"1210\"\u003e\n\u003ch2 data-start=\"1212\" data-end=\"1255\"\u003eComplete FuelTech Engine Harness Systems\u003c\/h2\u003e\n\u003cp data-start=\"1257\" data-end=\"1309\"\u003eStandalone engine harness solutions compatible with:\u003c\/p\u003e\n\u003cp data-start=\"1311\" data-end=\"1367\"\u003e• FuelTech FT450\u003cbr data-start=\"1327\" data-end=\"1330\"\u003e• FuelTech FT550\u003cbr data-start=\"1346\" data-end=\"1349\"\u003e• FuelTech FT600\u003c\/p\u003e\n\u003cp data-start=\"1369\" data-end=\"1494\"\u003eEngineered for reliable ignition control, injector sequencing, and sensor integration across Honda and performance platforms.\u003c\/p\u003e\n\u003chr data-start=\"1496\" data-end=\"1499\"\u003e\n\u003ch2 data-start=\"1501\" data-end=\"1530\"\u003eFuelTech Adapter Harnesses\u003c\/h2\u003e\n\u003cp data-start=\"1532\" data-end=\"1574\"\u003ePlug-and-play adapter systems designed to:\u003c\/p\u003e\n\u003cp data-start=\"1576\" data-end=\"1738\"\u003e• Convert factory wiring to FuelTech ECU platforms\u003cbr data-start=\"1626\" data-end=\"1629\"\u003e• Support chassis-to-ECU integration\u003cbr data-start=\"1665\" data-end=\"1668\"\u003e• Maintain proper signal routing\u003cbr data-start=\"1700\" data-end=\"1703\"\u003e• Simplify standalone conversions\u003c\/p\u003e\n\u003cp data-start=\"1740\" data-end=\"1811\"\u003eDesigned for clean installation without permanent chassis modification.\u003c\/p\u003e\n\u003chr data-start=\"1813\" data-end=\"1816\"\u003e\n\u003ch2 data-start=\"1818\" data-end=\"1844\"\u003ePatch Harness Solutions\u003c\/h2\u003e\n\u003cp data-start=\"1846\" data-end=\"1879\"\u003eFuelTech patch harnesses used to:\u003c\/p\u003e\n\u003cp data-start=\"1881\" data-end=\"2011\"\u003e• Bridge factory engine harnesses to standalone ECUs\u003cbr data-start=\"1933\" data-end=\"1936\"\u003e• Support partial conversions\u003cbr data-start=\"1965\" data-end=\"1968\"\u003e• Enable ECU upgrades without full rewire\u003c\/p\u003e\n\u003cp data-start=\"2013\" data-end=\"2078\"\u003eIdeal for performance upgrades and staged standalone transitions.\u003c\/p\u003e\n\u003chr data-start=\"2080\" data-end=\"2083\"\u003e\n\u003ch2 data-start=\"2085\" data-end=\"2132\"\u003eProfessional Standalone Integration Standard\u003c\/h2\u003e\n\u003cp data-start=\"2134\" data-end=\"2325\"\u003eAll FuelTech harness systems are built to support proper grounding strategy, stable power distribution, and shielded signal routing required for high-performance standalone engine management.\u003c\/p\u003e\n\u003cp data-start=\"2327\" data-end=\"2394\"\u003eDesigned for street builds, turbo applications, and motorsport use.\u003c\/p\u003e","products":[{"product_id":"fueltech-ft550-unterminated-wiring-harness-b-connector","title":"FuelTech FT550 Unterminated Wiring Harness – B Connector","description":"\u003ch2 data-start=\"510\" data-end=\"584\"\u003eProfessional Unterminated EFI Harness for Custom FuelTech Installations\u003c\/h2\u003e\n\u003cp data-start=\"586\" data-end=\"903\"\u003eThe FuelTech FT550 Unterminated Wiring Harness (B Connector) is designed for experienced builders and fabricators who require full control over their EFI wiring layout. This harness provides a direct, OEM-style connection to the FuelTech FT550 ECU while leaving all conductors unterminated for complete customization.\u003c\/p\u003e\n\u003cp data-start=\"905\" data-end=\"1115\"\u003eIdeal for race cars, engine swaps, and fully custom EFI builds, this harness allows you to design and route your wiring exactly how your application demands—without unnecessary adapters, extensions, or splices.\u003c\/p\u003e\n\u003chr data-start=\"1117\" data-end=\"1120\"\u003e\n\u003ch2 data-start=\"1122\" data-end=\"1183\"\u003eOEM FuelTech ECU Connector with Full Custom Wiring Freedom\u003c\/h2\u003e\n\u003cp data-start=\"1185\" data-end=\"1368\"\u003eThis harness features a genuine FuelTech \u003cstrong data-start=\"1226\" data-end=\"1247\"\u003eFT550 B connector\u003c\/strong\u003e that plugs directly into the ECU, ensuring proper pin fitment, terminal retention, and long-term electrical reliability.\u003c\/p\u003e\n\u003cp data-start=\"1370\" data-end=\"1554\"\u003eAll wires exit the connector unterminated, giving you the flexibility to integrate sensors, power distribution, and outputs according to your specific chassis and engine configuration.\u003c\/p\u003e\n\u003chr data-start=\"1556\" data-end=\"1559\"\u003e\n\u003ch2 data-start=\"1561\" data-end=\"1610\"\u003eBuilt for Motorsports \u0026amp; Standalone EFI Systems\u003c\/h2\u003e\n\u003cp data-start=\"1612\" data-end=\"1812\"\u003eThe wiring used in this harness is suitable for EFI and motorsports applications, making it appropriate for high-performance and competition vehicles where reliability and serviceability are critical.\u003c\/p\u003e\n\u003cp data-start=\"1814\" data-end=\"1998\"\u003eEach wire is clearly \u003cstrong data-start=\"1835\" data-end=\"1870\"\u003eprinted with pin identification\u003c\/strong\u003e, significantly reducing the chance of wiring errors during installation and streamlining the build process for complex systems.\u003c\/p\u003e\n\u003chr data-start=\"2000\" data-end=\"2003\"\u003e\n\u003ch2 data-start=\"2005\" data-end=\"2047\"\u003eFlexible Length for Clean ECU Placement\u003c\/h2\u003e\n\u003cp data-start=\"2049\" data-end=\"2290\"\u003eThis unterminated harness is offered in a \u003cstrong data-start=\"2091\" data-end=\"2109\"\u003e10-foot length\u003c\/strong\u003e, allowing flexible ECU mounting in the cabin, trunk, or other remote locations. The extended length supports clean routing in custom builds without requiring additional extensions.\u003c\/p\u003e\n\u003chr data-start=\"2292\" data-end=\"2295\"\u003e\n\u003ch2 data-start=\"2297\" data-end=\"2318\"\u003eIdeal Applications\u003c\/h2\u003e\n\u003cp data-start=\"2320\" data-end=\"2354\"\u003eThis harness is commonly used for:\u003c\/p\u003e\n\u003cul data-start=\"2355\" data-end=\"2569\"\u003e\n\u003cli data-start=\"2355\" data-end=\"2389\"\u003e\n\u003cp data-start=\"2357\" data-end=\"2389\"\u003eCustom EFI wiring from scratch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2390\" data-end=\"2437\"\u003e\n\u003cp data-start=\"2392\" data-end=\"2437\"\u003eFuelTech FT550 standalone ECU installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2438\" data-end=\"2480\"\u003e\n\u003cp data-start=\"2440\" data-end=\"2480\"\u003eRace cars and motorsports applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2481\" data-end=\"2523\"\u003e\n\u003cp data-start=\"2483\" data-end=\"2523\"\u003eEngine swaps and custom chassis wiring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2524\" data-end=\"2569\"\u003e\n\u003cp data-start=\"2526\" data-end=\"2569\"\u003eProfessional and DIY fabrication projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2571\" data-end=\"2574\"\u003e\n\u003ch2 data-start=\"2576\" data-end=\"2594\"\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul data-start=\"2596\" data-end=\"2752\"\u003e\n\u003cli data-start=\"2596\" data-end=\"2645\"\u003e\n\u003cp data-start=\"2598\" data-end=\"2645\"\u003e1× FuelTech FT550 Unterminated Wiring Harness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2646\" data-end=\"2692\"\u003e\n\u003cp data-start=\"2648\" data-end=\"2692\"\u003eOEM FuelTech \u003cstrong data-start=\"2661\" data-end=\"2676\"\u003eB Connector\u003c\/strong\u003e pre-installed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2693\" data-end=\"2752\"\u003e\n\u003cp data-start=\"2695\" data-end=\"2752\"\u003eUnterminated, labeled conductors for full customization\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2754\" data-end=\"2757\"\u003e\n\u003ch2 data-start=\"2759\" data-end=\"2780\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp data-start=\"2782\" data-end=\"2951\"\u003eThis product is intended for advanced wiring projects. Professional wiring knowledge, correct pinout references, and proper crimping tools are required for installation.\u003c\/p\u003e\n\u003cp data-start=\"2953\" data-end=\"3058\"\u003eImproper wiring can result in ECU or component damage. Professional installation is strongly recommended.\u003c\/p\u003e\n\u003ch2 data-start=\"2689\" data-end=\"2794\"\u003e\u003ca href=\"https:\/\/files.fueltech.net\/manuals\/FT450_FT550_FT550LITE_FT600.pdf\" title=\"fueltech ft450 ft550 ft600 ft700 manual pinout and diagram schematics\" rel=\"noopener\" target=\"_blank\"\u003eFueltech Wiring Diagrams Here\u003c\/a\u003e\u003c\/h2\u003e","brand":"VTI","offers":[{"title":"Default Title","offer_id":47453105586368,"sku":"vti412","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7956\/1152\/files\/IMG_9827-Enhanced-NR.webp?v=1770774400"},{"product_id":"fueltech-ft450-ft550-unterminated-wiring-harness-a-connector","title":"FuelTech FT450 \/ FT550 Unterminated Wiring Harness – A Connector","description":"\u003ch2 data-start=\"346\" data-end=\"418\"\u003eProfessional Unterminated EFI Harness for FuelTech FT450 \u0026amp; FT550 ECUs\u003c\/h2\u003e\n\u003cp data-start=\"420\" data-end=\"743\"\u003eThe FuelTech FT450 \/ FT550 Unterminated Wiring Harness (A Connector) is designed for builders and fabricators who want complete control over their EFI wiring layout. This harness provides a direct, OEM-style interface to the FuelTech ECU while leaving all conductors unterminated for fully custom engine and chassis wiring.\u003c\/p\u003e\n\u003cp data-start=\"745\" data-end=\"905\"\u003eIdeal for motorsports, engine swaps, and clean-sheet EFI builds, this harness allows precise routing and integration without unnecessary adapters or extensions.\u003c\/p\u003e\n\u003chr data-start=\"907\" data-end=\"910\"\u003e\n\u003ch2 data-start=\"912\" data-end=\"971\"\u003eOEM FuelTech A Connector with Full Custom Wiring Control\u003c\/h2\u003e\n\u003cp data-start=\"973\" data-end=\"1174\"\u003eThis harness features a genuine FuelTech \u003cstrong data-start=\"1014\" data-end=\"1029\"\u003eA connector\u003c\/strong\u003e that plugs directly into the FT450 or FT550 ECU, ensuring proper pin alignment, secure terminal retention, and long-term electrical reliability.\u003c\/p\u003e\n\u003cp data-start=\"1176\" data-end=\"1333\"\u003eAll wires exit the connector unterminated, giving you total flexibility to integrate sensors, power, grounds, and outputs based on your specific application.\u003c\/p\u003e\n\u003chr data-start=\"1335\" data-end=\"1338\"\u003e\n\u003ch2 data-start=\"1340\" data-end=\"1393\"\u003eBuilt for Standalone EFI \u0026amp; Motorsport Applications\u003c\/h2\u003e\n\u003cp data-start=\"1395\" data-end=\"1541\"\u003eThe wiring used in this harness is suitable for EFI and motorsports environments where reliability, serviceability, and clean layout are critical.\u003c\/p\u003e\n\u003cp data-start=\"1543\" data-end=\"1727\"\u003eEach conductor is \u003cstrong data-start=\"1561\" data-end=\"1596\"\u003eprinted with pin identification\u003c\/strong\u003e, streamlining the wiring process, reducing installation errors, and making troubleshooting significantly easier on complex builds.\u003c\/p\u003e\n\u003chr data-start=\"1729\" data-end=\"1732\"\u003e\n\u003ch2 data-start=\"1734\" data-end=\"1776\"\u003eFlexible Length for Clean ECU Placement\u003c\/h2\u003e\n\u003cp data-start=\"1778\" data-end=\"2014\"\u003eThis unterminated harness is supplied in a \u003cstrong data-start=\"1821\" data-end=\"1839\"\u003e10-foot length\u003c\/strong\u003e, allowing flexible ECU placement in the cabin, trunk, or other remote locations. The added length supports clean routing without the need for splices or secondary extensions.\u003c\/p\u003e\n\u003chr data-start=\"2016\" data-end=\"2019\"\u003e\n\u003ch2 data-start=\"2021\" data-end=\"2042\"\u003eIdeal Applications\u003c\/h2\u003e\n\u003cp data-start=\"2044\" data-end=\"2078\"\u003eThis harness is commonly used for:\u003c\/p\u003e\n\u003cul data-start=\"2079\" data-end=\"2289\"\u003e\n\u003cli data-start=\"2079\" data-end=\"2126\"\u003e\n\u003cp data-start=\"2081\" data-end=\"2126\"\u003eFuelTech FT450 standalone ECU installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2127\" data-end=\"2174\"\u003e\n\u003cp data-start=\"2129\" data-end=\"2174\"\u003eFuelTech FT550 standalone ECU installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2175\" data-end=\"2209\"\u003e\n\u003cp data-start=\"2177\" data-end=\"2209\"\u003eCustom EFI wiring from scratch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2210\" data-end=\"2246\"\u003e\n\u003cp data-start=\"2212\" data-end=\"2246\"\u003eRace cars and motorsports builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2247\" data-end=\"2289\"\u003e\n\u003cp data-start=\"2249\" data-end=\"2289\"\u003eEngine swaps and custom chassis wiring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2291\" data-end=\"2294\"\u003e\n\u003ch2 data-start=\"2296\" data-end=\"2314\"\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul data-start=\"2316\" data-end=\"2480\"\u003e\n\u003cli data-start=\"2316\" data-end=\"2373\"\u003e\n\u003cp data-start=\"2318\" data-end=\"2373\"\u003e1× FuelTech FT450 \/ FT550 Unterminated Wiring Harness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2374\" data-end=\"2420\"\u003e\n\u003cp data-start=\"2376\" data-end=\"2420\"\u003eOEM FuelTech \u003cstrong data-start=\"2389\" data-end=\"2404\"\u003eA Connector\u003c\/strong\u003e pre-installed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2421\" data-end=\"2480\"\u003e\n\u003cp data-start=\"2423\" data-end=\"2480\"\u003eUnterminated, labeled conductors for full customization\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2482\" data-end=\"2485\"\u003e\n\u003ch2 data-start=\"2487\" data-end=\"2508\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp data-start=\"2510\" data-end=\"2687\"\u003eThis product is intended for advanced wiring projects. Proper ECU pinout references, open-barrel crimping tools, and professional wiring knowledge are required for installation.\u003c\/p\u003e\n\u003cp data-start=\"2689\" data-end=\"2794\"\u003eImproper wiring may result in ECU or component damage. Professional installation is strongly recommended.\u003c\/p\u003e\n\u003ch2 data-start=\"2689\" data-end=\"2794\"\u003e\u003ca href=\"https:\/\/files.fueltech.net\/manuals\/FT450_FT550_FT550LITE_FT600.pdf\" target=\"_blank\" title=\"fueltech ft450 ft550 ft600 ft700 manual pinout and diagram schematics\" rel=\"noopener\"\u003eFueltech Wiring Diagrams Here\u003c\/a\u003e\u003c\/h2\u003e","brand":"VTI","offers":[{"title":"Default Title","offer_id":47453162242240,"sku":"vti413","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7956\/1152\/files\/IMG_9825-Enhanced-NR.webp?v=1770774860"},{"product_id":"products-fueltech-ft550-k-series-standalone-adapter","title":"FuelTech FT550 K-Series Plug \u0026 Play Standalone Adapter | VTI","description":"\u003ch1\u003eFuelTech FT550 K-Series Plug \u0026amp; Play Standalone Adapter | VTI\u003c\/h1\u003e\u003cp\u003eThe complete plug-and-play solution for converting your Honda K-Series engine harness to a FuelTech FT550 standalone ECU. Built using Teflon (mil-spec style) wire and flame-resistant loom materials, this adapter is designed for reliability, motorsport durability, and clean integration — completely prewired and ready to install.\u003c\/p\u003e\u003cp\u003eThis is not a universal patch harness. This is a structured conversion adapter built for serious standalone setups.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eDesigned For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eK20 \u0026amp; K24 engine platforms\u003c\/li\u003e\n\u003cli\u003eAcura RSX (DC5)\u003c\/li\u003e\n\u003cli\u003eHonda EP3 Civic Si\u003c\/li\u003e\n\u003cli\u003eK-swapped chassis running OEM-style K harnesses\u003c\/li\u003e\n\u003cli\u003eStreet, drag, drift, and road race builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eIntegrated Connections\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUX1 \u0026amp; AUX2\u003c\/strong\u003e — auxiliary output capability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eINJ Expansion\u003c\/strong\u003e — additional injector outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCANBUS\u003c\/strong\u003e — direct connection to FT550 for dash, logging \u0026amp; peripherals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA \u0026amp; B\u003c\/strong\u003e — main FT550 ECU connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRVS\u003c\/strong\u003e — rear speed sensor input for traction control \u0026amp; data logging\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAll circuits cleanly integrated — no unnecessary splicing or patch wiring.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eConstruction Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTeflon wire construction\u003c\/li\u003e\n\u003cli\u003eFlame-resistant loom material\u003c\/li\u003e\n\u003cli\u003eProfessionally terminated connectors\u003c\/li\u003e\n\u003cli\u003eFully prewired and labeled\u003c\/li\u003e\n\u003cli\u003eMotorsport-grade assembly standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eImportant Installation Notes\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eConnector Fitment:\u003c\/strong\u003e When using with a stock K20 harness, one connector lock will require minor modification for proper fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEP3 \/ RSX Main Relay:\u003c\/strong\u003e When installing in an EP3 Civic Si or K20 RSX chassis, an additional relay must be added to properly initiate and control the main relay system. Verify your chassis configuration before ordering.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFully assembled FT550 K-Series adapter\u003c\/li\u003e\n\u003cli\u003eBasic startup FuelTech base map\u003c\/li\u003e\n\u003cli\u003eInstallation notes\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOptional tuning support available upon request — leave tuning requests in checkout notes.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eWhy VTI?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTrue plug-and-play integration — no guesswork\u003c\/li\u003e\n\u003cli\u003eClean standalone conversion strategy\u003c\/li\u003e\n\u003cli\u003eProper auxiliary expansion support\u003c\/li\u003e\n\u003cli\u003eCANBUS integration done correctly\u003c\/li\u003e\n\u003cli\u003eBuilt by experienced harness manufacturers\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNeed a custom FT550 configuration? Contact us directly for advanced integration, additional outputs, or full standalone harness builds.\u003c\/p\u003e","brand":"VTI","offers":[{"title":"Default Title","offer_id":47463402373312,"sku":"vti515","price":350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7956\/1152\/files\/IMG_9699-Enhanced-NR.webp?v=1771089110"},{"product_id":"k20-k24-ft450-engine-harness","title":"FuelTech FT450 Engine Harness – K20 \/ K24 Street-Spec TXL | VTI","description":"\u003ch1\u003eFuelTech FT450 Engine Harness – K20 \/ K24 Street-Spec TXL | VTI\u003c\/h1\u003e\u003cp\u003eBuilt for real street cars. This is VTI's Street-Spec TXL K-Series harness designed specifically for FuelTech FT450 applications on K20 and K24 engines. Clean layout, proven routing, and budget-minded without sacrificing functionality.\u003c\/p\u003e\u003cp\u003eNot a mil-spec DR-25 harness — this is a durable, serviceable street harness built for performance K-swap builds that need reliability without overbuilding.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eDesigned For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eK20 \/ K24 engines\u003c\/li\u003e\n\u003cli\u003eFuelTech FT450 ECU\u003c\/li\u003e\n\u003cli\u003eK-swap chassis builds\u003c\/li\u003e\n\u003cli\u003e02-04 style K-swap subharness setups\u003c\/li\u003e\n\u003cli\u003eUniversal relay \/ fuse box configurations\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTXL automotive wire throughout\u003c\/li\u003e\n\u003cli\u003eStreet-spec loom construction\u003c\/li\u003e\n\u003cli\u003eIntegrated C101 connector — connects directly to K-swap chassis subharness or universal relay\/fuse box\u003c\/li\u003e\n\u003cli\u003eHigh impedance injector configuration\u003c\/li\u003e\n\u003cli\u003e02-04 K-swap subharness compatible\u003c\/li\u003e\n\u003cli\u003eBase FT450 startup map included\u003c\/li\u003e\n\u003cli\u003eFull pinout sheet included\u003c\/li\u003e\n\u003cli\u003eClearly labeled branches for simplified installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eConstruction Spec\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTXL automotive primary wire\u003c\/li\u003e\n\u003cli\u003eProperly crimped ECU terminals\u003c\/li\u003e\n\u003cli\u003eStreet-spec loom construction\u003c\/li\u003e\n\u003cli\u003eClean routing for simplified installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e High impedance injectors only. Low impedance setups are not supported in this configuration.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eComplete FT450 K-Series engine harness\u003c\/li\u003e\n\u003cli\u003eIntegrated C101 connector\u003c\/li\u003e\n\u003cli\u003eBase FT450 startup map\u003c\/li\u003e\n\u003cli\u003eFull pinout documentation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCharge harness (required separately)\u003c\/li\u003e\n\u003cli\u003eRelay \/ fuse box\u003c\/li\u003e\n\u003cli\u003eSensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eIdeal For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBudget-minded turbo K-swap builds\u003c\/li\u003e\n\u003cli\u003eStreet K-swap projects\u003c\/li\u003e\n\u003cli\u003eFuelTech standalone conversions\u003c\/li\u003e\n\u003cli\u003eClean engine bay builds\u003c\/li\u003e\n\u003cli\u003eReliable daily-driven performance setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eOff-road \/ motorsport use only.\u003c\/em\u003e\u003c\/p\u003e","brand":"VTI","offers":[{"title":"None - Just Harness","offer_id":47464099545280,"sku":"vti517","price":499.0,"currency_code":"USD","in_stock":true},{"title":"Add Relay and Fuse Switch Panel PDM","offer_id":47464099578048,"sku":"vti518","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7956\/1152\/files\/IMG_9350_3078eb16-fdb1-4676-a6c9-cf2a83f6c6a5.webp?v=1771173416"},{"product_id":"obd1-fueltech-ft550-conversion-adapter","title":"OBD1 to FuelTech FT550 Adapter Harness – Logic Corrected | VTI","description":"\u003ch1\u003eOBD1 to FuelTech FT550 Adapter Harness – Logic Corrected | VTI\u003c\/h1\u003e\u003cp\u003eThis is not a repin sheet solution. 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This V2 adapter is manufactured by CarrotTopTuning and supplied through VTI, engineered for reliable signal integrity, stable power distribution, and future expansion capability right out of the box.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003ePlatform Compatibility\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHonda K20 \u0026amp; K24 platforms\u003c\/li\u003e\n\u003cli\u003eCompatible with factory and aftermarket K-Series engine harnesses\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the FuelTech FT450 ECU\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eWhat's Built In (V2)\u003c\/h2\u003e\u003ch3\u003eDTM12P Expansion Connector\u003c\/h3\u003e\u003cp\u003eIntegrated 12-pin DTM expansion connector provides IGN12V supply, dedicated 5V reference power, and stable power delivery for auxiliary sensors and control modules — clean expansion without additional harness modification.\u003c\/p\u003e\u003ch3\u003eRear Wheel Speed Sensor Extension\u003c\/h3\u003e\u003cp\u003eDedicated pre-wired extension for accurate speed signal transfer, reliable traction control input, and stable speed-based tuning data. 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Two versions are available to accommodate different configurations, including an extended interior harness tailored for mid-engine swaps like the Toyota MR2 and Acura NSX.\u003c\/p\u003e\n\u003ch4\u003eKey Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent Fuse\/Relay Box\u003c\/strong\u003e: The harness includes a built-in mini fuse\/relay box, eliminating the need for under-dash wiring in race car applications. This design provides a streamlined, clean setup for professional builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction\u003c\/strong\u003e: Manufactured with high-quality, temperature-resistant TXL wiring to withstand the demands of racing environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Compatibility\u003c\/strong\u003e: Comes with a C101 connector adapter for seamless integration with 02-04 K-swap conversion harnesses (for EF, EG, EK, and DC2 chassis) or universal conversion harnesses for non-Honda chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeutsch Connectors\u003c\/strong\u003e: Enables easy expansion for dual injectors or additional inputs\/outputs without altering the existing harness, maintaining a clean and adaptable design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear Labeling\u003c\/strong\u003e: Every connector is clearly labeled for straightforward installation, eliminating the need for wiring diagrams.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eApplication Notes:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eA charge harness must be run separately (not included).\u003c\/li\u003e\n\u003cli\u003eHigh-impedance injectors are required; the harness is incompatible with resistor boxes.\u003c\/li\u003e\n\u003cli\u003eFor race car setups with no interior harness or dash, a switch panel (currently in development) is necessary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis\u003c\/strong\u003e: Suitable for EF, EG, EK, DC2, and other universal setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Sensors\u003c\/strong\u003e: Works seamlessly with factory sensors, requiring no modifications or replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eConnection Points:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFuelTech Connectors A \u0026amp; B\u003c\/li\u003e\n\u003cli\u003eCAN BUS A \u0026amp; B\u003c\/li\u003e\n\u003cli\u003eFuelTech Strain Gauge (Gear)\u003c\/li\u003e\n\u003cli\u003eMini Fuse\/Relay Box\u003c\/li\u003e\n\u003cli\u003eAUX Connections:\n\u003cul\u003e\n\u003cli\u003e8-pin for Injectors\u003c\/li\u003e\n\u003cli\u003e12-pin for Inputs\/Outputs\u003c\/li\u003e\n\u003cli\u003e12-pin for Power\/Ground Distribution\u003c\/li\u003e\n\u003cli\u003e6-pin for Conversion Harness Adapter\/Switch Panel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eVTEC Solenoid\u003c\/li\u003e\n\u003cli\u003eVTC\u003c\/li\u003e\n\u003cli\u003eOil Pressure Sensor (3-pin)\u003c\/li\u003e\n\u003cli\u003eCrank Sensor (CKP) (02-04 K20 style)\u003c\/li\u003e\n\u003cli\u003eOEM Coils 1-4\u003c\/li\u003e\n\u003cli\u003eExhaust Cam Position Sensor (CPS)\u003c\/li\u003e\n\u003cli\u003eIntake TDC Sensor\u003c\/li\u003e\n\u003cli\u003eEngine Coolant Temperature (ECT) Sensor\u003c\/li\u003e\n\u003cli\u003eIntake Air Temperature (IAT) Sensor\u003c\/li\u003e\n\u003cli\u003eAlternator (02-04 K20 style)\u003c\/li\u003e\n\u003cli\u003eThrottle Position Sensor (TPS)\u003c\/li\u003e\n\u003cli\u003eIdle Control Motor\u003c\/li\u003e\n\u003cli\u003eElectronic Speed Sensor (VSS)\u003c\/li\u003e\n\u003cli\u003eOEM Injectors 1-4\u003c\/li\u003e\n\u003cli\u003eReverse Lights\u003c\/li\u003e\n\u003cli\u003eStarter Signal\u003c\/li\u003e\n\u003cli\u003ePower Distribution Block\u003c\/li\u003e\n\u003cli\u003eGround\u003c\/li\u003e\n\u003cli\u003eRadiator Fan (OBD1-style connector)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis FuelTech FT550 harness simplifies wiring for Honda K20\/K24 engines, providing robust, race-ready performance while maintaining adaptability for various vehicle configurations.\u003cbutton class=\"share-button__button\"\u003e\u003cspan class=\"svg-wrapper\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" class=\"icon icon-share\" viewbox=\"0 0 13 12\"\u003e\u003cpath stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M1.625 8.125v2.167a1.083 1.083 0 0 0 1.083 1.083h7.584a1.083 1.083 0 0 0 1.083-1.083V8.125\"\u003e\u003c\/path\u003e\u003cpath fill=\"currentColor\" fill-rule=\"evenodd\" d=\"M6.148 1.271a.5.5 0 0 1 .707 0L9.563 3.98a.5.5 0 0 1-.707.707L6.501 2.332 4.147 4.687a.5.5 0 1 1-.708-.707z\" clip-rule=\"evenodd\"\u003e\u003c\/path\u003e\u003cpath fill=\"currentColor\" fill-rule=\"evenodd\" d=\"M6.5 1.125a.5.5 0 0 1 .5.5v6.5a.5.5 0 0 1-1 0v-6.5a.5.5 0 0 1 .5-.5\" clip-rule=\"evenodd\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"VTI","offers":[{"title":"Default Title","offer_id":47597218824384,"sku":null,"price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7956\/1152\/files\/IMG_9363_2703a1d9-76d5-498f-b349-57eee591409a.webp?v=1772327949"}],"url":"https:\/\/www.vtecinnovations.com\/collections\/fueltech-harnesses-and-adapters.oembed","provider":"VTI","version":"1.0","type":"link"}