Rywire

Rywire is a trusted name in performance automotive wiring, specializing in high-quality engine harnesses, tucked wiring solutions, and mil-spec connectors for tuner and race applications. Whether you're tackling a K-series swap, building a pro-touring classic, or refreshing a worn OEM harness, Rywire delivers plug-and-play reliability with meticulous craftsmanship.

  • Engine harness conversions for popular chassis and swaps
  • Tucked and shaved harnesses for a clean engine bay
  • Mil-spec bulkhead connectors and accessories
  • Customizable options to match your build's needs

Every harness is assembled in the USA using top-tier materials, ensuring factory-level fit and function. Browse the collection to find the right harness for your project.

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Rywire OBD1 and OBD2 main relay kill switch harness with factory-style connectors and protective looming.

$55.00

Low in stock
Rywire K-Series naturally aspirated engine harness for Haltech Elite 1500 showing mil-spec wiring and connectors.

$1,749.00

Low in stock
Rywire plug-and-play wiring adapters for OBD2 engine harness to OBD1 fuel injectors

$60.00

Low in stock
Rywire electrical grounding kit featuring high-conductivity wires and heavy-duty ring terminals.

$100.00

In stock
Rywire RY-B-SUB-EG chassis-specific wiring adapter for 1992-1995 Honda Civic and 1994-1995 Acura Integra.

$100.00

In stock
Rywire chassis-specific wiring adapter harness for 1996-1999 Acura Integra 2A with factory-style connectors

$100.00

Low in stock
Rywire Mil-Spec engine wiring harness with professional-grade connectors for Honda K-Series RSX K20 sensors.

$1,050.00

In stock
Rywire V3 race-style chassis adapter featuring a compact integrated relay bank and fuse block for custom wiring.

$475.00

Low in stock
Machined titanium VTEC pressure switch delete bolt with Rywire branding

$10.00

In stock
Rywire black mounting panel featuring six silver toggle switches for manual automotive electrical control

$185.00

In stock
Rywire 4-wire O2 sensor extension harness for 1992-2000 Honda and Acura models.

$25.00

In stock
Rywire Tucked Flipable aluminum radiator with a 24x13.25 inch tall core and side mounting bungs.

$550.00

Low in stock
Rywire 24x9 inch small tucked flipable aluminum performance radiator for custom engine bay cooling setups.

$500.00

Low in stock
Rywire small 3x3 inch mil-spec connector firewall plate featuring a center circular cutout and pre-drilled mounting holes

$40.00

Low in stock
Rywire 175A manual reset high-amp circuit breaker for automotive PDM kit isolation.

$50.00

Low in stock
Rywire Honda K24 tucked engine wiring harness with 02-04 crank and knock sensor plugs and front VSS lead.

$725.00

Low in stock
Rywire tucked engine wiring harness for Honda K24 engines featuring 02-04 crank and knock sensor connectors.

$725.00

Low in stock
Rywire K2-RWD chassis specific adapter harness for 2000-2005 Honda S2000 K-series swaps using K-Pro ECU.

$200.01

In stock
Rywire Mil-Spec engine wiring harness for RWD K-Series swaps featuring Tefzel wire and Raychem DR-25 heat shrink tubing.

$949.00

Low in stock
Rywire K-Series tucked engine harness with black braided looming and multi-pin automotive connectors.

$725.00

In stock
Rywire K-Series tucked budget engine harness for 2002-2004 RSX K20 sensors with OBD2 connectors.

$725.00

In stock
Rywire Honda K-Series universal fuse box and relay block for 2002-2004 K20 engine harnesses.

$450.00

Low in stock
Rywire plug-and-play wiring adapter for connecting a Honda B-series MAP sensor to a K-series engine harness.

$30.00

Low in stock
Rywire K-Series chassis adapter harness with multi-pin plugs and automotive wiring for 1999-2000 Honda Civic EK.

$350.00

In stock
Rywire K-series engine swap chassis adapter harness with multi-pin connectors and color-coded wiring

$350.00

Low in stock
Rywire electrical adapter harness for connecting an OBD2 engine loom to Acura RDX fuel injectors.

$60.00

In stock
Rywire plug-and-play fuel injector adapters for connecting an OBD1 harness to Injector Dynamics EV14 injectors

$60.00

Low in stock
Rywire 8-pin OBD2 to OBD2 distributor adapter harness with plastic connectors and color-coded wiring.

$50.00

Low in stock
Rywire Honda Prelude US Spec OBD2 to OBD2 10-pin distributor adapter jumper harness.

$50.00

In stock
Rywire OBD2 to OBD1 distributor jumper harness for US-spec Honda Prelude

$50.00

Low in stock

Can’t Find the Part You Need?

Our catalog represents only a portion of the automotive products available through our supplier network. If you cannot find a specific part, brand, or application on our website, submit a request below, and our team will help source it for you.

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