Originally Posted by Civic2Scooby
so the OBD2 harness will plug right into the obd1 ECU harness and you can then run the obd-1 ecu?
Yes. The "extra" OBD2 bullshit is all on a fourth plug that connects to the rest of the car on the passenger side shock tower. On an OBD1 car, just leave that plug hanging and you're good to go.