Swapping a K20 or K24 into a 1992–1995 Honda Civic EG shouldn't mean spending days tracing wires, modifying an old harness, or troubleshooting electrical problems after the engine is already installed.
The Rywire Plug-and-Play K-Series Engine & Chassis Harness is designed to make the electrical side of your EG K-swap clean, organized, and straightforward.
Built around the 2002–2004 Acura RSX K-Series electronics, this harness gives you the connections needed to integrate your K20/K24 engine and ECU into the EG chassis while maintaining the factory functions your swap needs.
Built Specifically for 1992–1995 Civic EG K-Swaps
This isn't a universal harness that you have to figure out as you go.
It's designed for 1992–1995 Honda Civic EG chassis running a K-Series engine using the 2002–2004 RSX-style engine electronics.
Compatible EG models include:
CX • DX • LX • Si • EX
Whether you're building a street-driven K20 EG, an all-motor K24 setup, or a turbocharged race car, this harness gives you a clean foundation for the entire build.
Compatible K-Series Engine Setups
Designed around 2002–2004 RSX-style K-Series sensors and electronics, making it an excellent solution for popular:
K20 • K20A • K20A2 • K20Z • K24 • K24A • K24A2 and other compatible K-Series combinations
Sensor compatibility can vary depending on the exact engine and components being used, so verify your engine's sensors before ordering.
Works With Popular K-Series ECU & Standalone Options
This harness can be used as the foundation for builds running popular engine-management systems including:
Hondata KPro
KTuner
Haltech
FuelTech
Exact ECU compatibility and additional wiring requirements depend on your ECU and engine configuration.
Engine Connections
The harness provides connections for the critical components required to operate your K-Series engine, including:
VTEC solenoid
VTC
Oil pressure sending unit
2002–2004 K20-style crank position sensor (CKP)
Ignition coils 1–4
Exhaust cam position sensor (CPS)
Intake-side TDC sensor
2002–2004 K20-style engine coolant temperature sensor (ECT)
2002–2004 K20-style knock sensor
Intake air temperature sensor (IAT)
2002–2004 K20-style alternator
Manifold absolute pressure sensor (MAP)
Throttle position sensor (TPS)
Idle air control motor
Electronic vehicle speed sensor (VSS)
Fuel injectors 1–4
Chassis & Transmission Integration
A proper swap harness needs to do more than just make the engine run.
This setup also provides connections for important chassis and transmission functions, including:
Gauge-cluster coolant temperature sender
Reverse lights
Reverse lockout solenoid
Starter signal
ECU plugs A & B
Power distribution connection
Ground connection
Two additional wires for expansion
Charge harness
Important VSS Requirement
This harness is designed to use the 2002–2004 RSX electronic vehicle speed sensor located closest to the firewall.
Make sure your transmission and speed-sensor configuration are compatible before ordering.
Why Use a Rywire Harness?
The wiring harness is one of the most important parts of any K-swap.
Poor wiring can turn a great engine combination into weeks of troubleshooting—no-start conditions, intermittent sensor faults, charging problems, grounding issues, and ECU communication problems.
A purpose-built Rywire harness gives you a cleaner solution designed specifically around performance engine swaps.
Key Benefits
Designed specifically for 1992–1995 Civic EG K-swaps
Built around 2002–2004 RSX K-Series electronics
Supports popular K20 and K24 combinations
Clean engine and chassis integration
Eliminates unnecessary factory wiring
Professional appearance in the engine bay
Reduces custom wiring and troubleshooting
Supports popular aftermarket engine-management systems
Includes charge harness
Excellent for street, drag, and track builds
Spend Less Time Wiring. Get Your K-Swap Running.
You've already sourced the engine, transmission, ECU, mounts, fuel system, and all the other pieces required to K-swap your EG.
Don't let the wiring become the part that holds the entire project up.
The Rywire 1992–1995 Honda Civic EG K20/K24 Engine & Chassis Harness gives you a clean, purpose-built wiring solution designed to bring your K-Series engine and EG chassis together.
Cleaner installation. Less wiring headache. Faster path to getting your K-swap running.
Important Fitment Information
Chassis: 1992–1995 Honda Civic EG Engine Electronics: 2002–2004 Acura RSX-style K-Series VSS: Uses 2002–2004 RSX speed sensor located closest to the firewall
K-Series swaps can use many different combinations of engines, transmissions, sensors, ECUs, and accessories. Verify that your exact combination matches the harness configuration before ordering.
