{"product_id":"hybrid-racing-tucked-engine-harness-k-swap","title":"Hybrid Racing Tucked Engine Harness - K Swap","description":"\u003cp\u003eThis is a complete engine harness built around 2002-2004 RSX (DC5) and K20A2 wiring, and it sits in a gap nobody was filling. On one side you've got budget replacement harnesses with histories nobody can account for. On the other, full motorsports harnesses that cost more than the engine going in. This is the one in between: clean tucked routing, factory Honda wire colors so you can actually trace a circuit, and machine testing on every single harness before it ships.\u003c\/p\u003e\n\u003ch4\u003eWhy Hybrid Racing Built It\u003c\/h4\u003e\n\u003cp\u003eHybrid Racing's first successful product was a K-swap conversion harness, and wiring has been part of what they do ever since. What shaped this design was years of helping customers trace swap problems back to the same handful of causes: wiring errors, and harnesses nobody could vouch for.\u003c\/p\u003e\n\u003cp\u003eSo everything here comes from that experience. OEM Honda wire colors so a technician can follow a service manual. Removable injector and VSS adapters so you're never cutting into the main loom. K24 crank and knock sensor connectors in the box. Three spare circuits through C101 for whatever you add later. And a machine test against the production wiring map before it leaves the building.\u003c\/p\u003e\n\u003ch4\u003eClean Routing You Can Still Work On\u003c\/h4\u003e\n\u003cp\u003eThe branches take a tidier path through the bay and tie down at factory mounting locations, which does two things. It looks right with the hood up, and more importantly it stops the harness moving around, which is what causes rubbing and eventual wear-through.\u003c\/p\u003e\n\u003cp\u003eThe wire colors and stripe patterns follow the corresponding Honda circuits. That sounds minor until you're troubleshooting at midnight and can pull up a factory service manual and trace exactly what you're holding. A harness in generic colors leaves you guessing.\u003c\/p\u003e\n\u003ch4\u003eChange Connections Without Cutting\u003c\/h4\u003e\n\u003cp\u003eThis is the design decision they're proudest of. The injector and VSS connections live on removable adapter harnesses that plug into the main loom rather than being wired into it.\u003c\/p\u003e\n\u003cp\u003eIt ships with an injector adapter for 2002-2004 RSX Type-S and K20A2-style injector connectors, the ones people call Honda OBD2 injector clips, plus a VSS adapter for the K20A2 final-drive-driven speed sensor. If your injectors or transmission use different connectors, optional adapters swap right in.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNo cutting, no depinning, no repinning the main harness.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat matters over the life of a build, because setups change. A harness that can change with them is worth a lot more than one you have to modify with a razor blade.\u003c\/p\u003e\n\u003ch4\u003eRunning A K24?\u003c\/h4\u003e\n\u003cp\u003eThe K24 connectors are in the box and the change is straightforward. Depin the terminals from the K20 crank and knock sensor connectors, repin them into the included K24 connectors during installation, and you're set. Careful work, but no cutting.\u003c\/p\u003e\n\u003ch4\u003eRead This Before You Order\u003c\/h4\u003e\n\u003cp\u003eWiring is where swaps go wrong, so here's everything worth confirming up front. If any of it is unclear for your setup, email Hybrid's tech team and they'll sort it out with you.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eYou probably still need a conversion harness.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis is the engine harness, connecting your sensors, injectors, coils, alternator, and ECU. A chassis conversion harness is what ties that RSX-style wiring into your car's factory chassis wiring. Unless your car already has chassis wiring built to accept a factory 02-04 RSX engine harness, you need both.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eYour engine code alone doesn't confirm fitment.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt depends on the engine code, crank and knock sensor connections, throttle setup, injector connectors, transmission VSS, ECU, and chassis wiring together. And to be direct about a common assumption:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eK-Pro compatibility does not confirm fitment.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThat names a tuning platform, not a complete engine, transmission, and wiring combination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDrive-by-cable only.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis harness has circuits for a cable throttle body using a Honda-style TPS. There's no drive-by-wire control built in, so a DBW engine won't work with it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWideband ECUs only.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt's designed to work with a US or JDM spec ECU using a factory Denso wideband O2 sensor. Do not use it with a UK spec narrowband ECU.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot for K20C or direct-injected K24.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOne note on the US spec VTEC oil pressure switch.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis harness doesn't support it, because most engines don't have it and most don't need it. You'll disable that sensor in your tuning software, and it has no effect on VTEC operation.\u003c\/p\u003e\n\u003cp\u003eThe installation guide has an engine-by-engine compatibility reference that spells out what your specific setup needs. If you'd rather have us check, send tech support your engine code, transmission and VSS type, ECU, throttle body, and chassis before you order.\u003c\/p\u003e\n\u003ch4\u003eHow It's Built And Tested\u003c\/h4\u003e\n\u003cp\u003eThe main harness uses AVSS thin-wall stranded bare copper automotive wire built to JASO D611, with 0.5mm² on signal circuits and 1.25mm² on grounds. The ECU connection is a three-piece 86-way OEM-pattern plug set.\u003c\/p\u003e\n\u003cp\u003eEvery completed harness is machine tested against the production pin-to-pin wiring map, checking for incorrect connections, open circuits, and shorts. That's the part that matters most, because a wiring fault caught on a test bench costs nothing, and one caught with the engine in the car costs a weekend.\u003c\/p\u003e\n\u003ch4\u003eWhat's In The Box\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Complete K-series engine harness configured for K20 connections, with three spare circuits through C101\u003c\/li\u003e\n\u003cli\u003e(1) Injector adapter harness for 2002-2004 RSX Type-S \/ K20A2-style injector connectors\u003c\/li\u003e\n\u003cli\u003e(1) VSS adapter harness for the 2002-2004 RSX Type-S \/ K20A2 speed sensor\u003c\/li\u003e\n\u003cli\u003e(1) K24 three-wire crank sensor connector\u003c\/li\u003e\n\u003cli\u003e(1) K24 one-wire knock sensor connector\u003c\/li\u003e\n\u003cli\u003eZip ties and factory-location harness ties, supplied loose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInjectors and the vehicle speed sensor are not included.\u003c\/p\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWire: AVSS thin-wall stranded bare copper, built to JASO D611\u003c\/li\u003e\n\u003cli\u003eCircuit sizes: 0.5mm² signal, 1.25mm² ground\u003c\/li\u003e\n\u003cli\u003eColors: OEM Honda color and stripe patterns\u003c\/li\u003e\n\u003cli\u003eECU connection: three-piece 86-way OEM-pattern plug set\u003c\/li\u003e\n\u003cli\u003eTesting: machine compared against the production pin-to-pin wiring map for incorrect connections, open circuits, and shorts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWho Should Run This Harness\u003c\/h4\u003e\n\u003cp\u003eThis is for the builder who wants a properly made engine harness without going full Mil-spec, and who'd rather have factory wire colors and a test report than save a hundred dollars on something with an unknown past. Wiring either disappears into the background or ruins your year, and there's not much in between. Send us your combination if there's any doubt, order the right parts, and do it once.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecomplete K-series engine harness, built around 2002-2004 RSX (DC5) \/ K20A2 wiring.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSupports:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eK20 and K24 swaps using K20A2-style sensors, controls, and a compatible ECU.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNot for:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eK20C, direct-injected K24, drive-by-wire, or narrowband ECUs.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003einjector and VSS adapter harnesses, K24 crank and knock sensor connectors, three spare C101 circuits, and harness ties.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ea chassis conversion harness is required unless your car already accepts a factory RSX engine harness. Does not support the US spec VTEC oil pressure switch.\u003c\/p\u003e","brand":"Hybrid Racing","offers":[{"title":"Default Title","offer_id":44949078900829,"sku":"HYB-EWH-01-05","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1151\/0688\/files\/Hybrid-Racing-Tucked-Engine-Harness-K-Swap-1.jpg?v=1787788456","url":"https:\/\/jhpusa.com\/products\/hybrid-racing-tucked-engine-harness-k-swap","provider":"JHPUSA","version":"1.0","type":"link"}