Originally Posted by OmniCoupe

Hey, I'm also doing this swap but it's a bit different. I have a jdm EJ1 and a jdm GSR complete with harness, ecu etc.
The car is obd1, and the engine is obd2a, so I'm gonna cut the harness about 10" from the ecu plugs and just splice the appropriate wires into the obd1 harness using diagrams, then add the extra wires, IAB etc.
I'm doing this because I chipped a P91 and it's giving a cel code for faulty ecu. I believe it's just my crappy soldering. I have another p91 and a jdm p08, and another chipping kit from xenocron. I just don't have time to chip properly before the swap so I'll use the obd2a p72 for now. But I plan to use a chipped obd1 so I want to leave the old harness in for later.

So I'm cool on the passenger side (jdm), but what about the harness on the driver/tranny side? can I just plug the engine side plugs to the car side plugs on the shock tower and hope? I'm not finding anything online with regards to this.
If I find nothing I guess I can look at which sensors go to which wires on my old engine and rewire to suit.

Also a question to Dukie432, when you made the spacers for the tranny top mount, were the holes on the mount directly above the bolts on the tranny? I also wanna do this because I don't want to move the bracket on the car body. was planning to use spacers, take the bolts out of the tranny and use you longer bolts to run thought the mount, through the spacers and into the tranny.

Originally Posted by 94EG8

You're creating hours of unncessary work for yourself. Either reuse the original civic harness and lengthen a few connectors and use an OBD1 distributor, alternator or injectors, or use an OBD2 USDM Integra engine harness (ideally a '96 - '99 harness), or cut and splice the OBD2 injector, distributor and alternator plugs and replace them with ones from the JDM harness. DO NOT under any circumstances try to reuse the JDM engine harness.



They don't quite line up, they are about 1/2" off.

You should also create your own thread.