K-Series Control: Elite Adaptor Harness for EP3 & DC5
Unleash the K20 engine in your Honda Civic EP3 (2002-2005) or Integra DC5 / Acura RSX (2002-2004) with the Haltech Elite Plug ‘n’ Play Adaptor Harness. This harness bridges the gap between your factory wiring loom and a Haltech Elite 1000 or 1500 ECU, allowing for full programmable control of fuel, ignition, and i-VTEC. It eliminates the need for messy patch harnesses or re-pinning, providing a clean and reversible installation path.
Factory Integration Note
This adaptor allows the Elite ECU to run the engine with precision, supporting features like launch control and flex fuel (with added sensors). However, please note that this harness does not support the factory multiplexed coolant temperature gauge, battery light, or AC request signal on these chassis. It is ideal for race cars or street cars using an aftermarket digital dash (like the Haltech IC-7) to display engine vitals.
Technical Specifications
| Feature | Specification |
|---|---|
| Vehicle Suitability | Honda Civic EP3 (02-05), DC5/RSX (02-04) |
| Engine Suitability | K20A / K20A2 / K20A3 |
| ECU Compatibility | Haltech Elite 1000 / 1500 |
| Transmission | Manual Transmission Only |
| Limitations | No Multiplex Dash Support (Temp/Batt/AC) |
Kit Includes
- Injection Moulded Plug ‘n’ Play Adaptor Harness
- M14 x 1.5 Air Temp Sensor with Plug & Pins
- Auxiliary I/O 16 Pin Tyco Plug & Pins
Note: ECU is NOT included. This is the harness only.

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