Jonathan_ED3

Is this everything I need to put an OBDII motor into an OBDI chasis?

I REALLY need to know if this is everything. I'm trying to sell my engine...bought the car with it, so I don't know what all they did to the wiring to make it work.

P75 ECU plugs into the stock ECU harness....

LS engine harness plugs into the strut tower plugs...

is this how it works, or is there a lot more to it?

VTECVillain

If you have the complete OBDII engine and harness, I would use an OBDI LS ecu. It will plug into the cabin harness and run the OBDII motor just fine. The OBDII engine harness will plug directly into the shock tower like the OBDI Civic's. There will be little, if any wiring involved.

Jonathan_ED3

how many plugs are there stock in the Civic strut tower harness on the passenger side? 3, or 4?

also, it's running off of a P75 ECU...that's OBDII, isn't it? which would lead me to believe there is more wiring involved in my car currently than I would like to take out

I'm trying to sell it, and I'm wanting to sell everything with it so it'll run perfectly and be plug in play in the buyers car.....

I can't figure out exactly what wiring (hopefully not everything from the ECU forward!) I need to give him

jdmekcivic2eg

yes... if you have a 97 engine, use the 97 engine harness.. all you need is a obd I 94-95 ls ecu and you will be fine.. no wiring is required