I'm thinking that the following wiring/circuit items will need to be stripped from the standard EF engine harness:-back up light wiring -coolant temp for cluster. I ended up making a k20a2 conversion schematic for a '99 automatic CDM EK, as well.. A forum community dedicated to Honda and Acura K Series engine platform owners and.. A4 is connected to the ground end of the VSS and IACV before G101. That should all be done in the RSX wiring harness. G101 is the part that comes out of the same section that the injector clips come out of. On the RSX, G101 is grounded by connecting to the intake manifold.
Here's the complete breakout of your Acura RSX ECU harness. We'll be dissecting each plug and it's functions and wire values as well as wiring color diagram as well. Let's start at plug A the 31 pin terminal of your Acura RSX ECU pinout. Terminal 1 - Black wire with white stripe - PHO2SHTC - Air Fuel ratio sensor heater. In general you need to K20A engine wiring harness. This harness plugs straight into the ECU A and B connectors, leaving only the ECU E connector and the engine harness 20 pin connector for you to wire in. Wiring diagram. This is a valid, tested wiring diagram from our race car. It runs perfectly without any codes (with OBDII disabled).