I have searched but didn’t know if the info that I got would apply to my situation. I have a 1990 civic with a rywire b series obd1 conversion harness. I have a b18a1 that came out of a 90 Integra which is a obd0 car. but it was not the original motor out of the car, it was a junkyard motor out of 93 Integra which was obd1. The motor was converted to obd0 with the old obd0 harness. I was wondering if a d series harness will work on the rye wire harness because they are About 60 bucks cheaper.

Never mind I’m a idiot

yea it was plug and play