I bought a 1990 CRX DX with a B18A1 / 5 speed manual transmission in the engine bay. The only reason I bought the car is to get it running, gut the interior, and go play at some of the auto-x events. I paid $1000 for a pretty clean body CRX with the drivetrain already installed, new axles, new mounts, poly bushings all around, and coilovers, so I'm willing to do whatever it takes to get it wired correctly and get it running. Enough with the background crap, here's my problem. I don't know what year B18A1 I have and I don't know what wiring harness/ECU I need to get it done. I believe the engine is out of a 90-91 Integra LS, but I am not 100% sure. I took some pictures with some hope of a fellow member helping me out with some of my questions. I already have 2 PR4 ECU's, one is an OBD0 and the other is an OBD1. I just need to know what wiring harness and ECU will get my CRX running correctly. Any help is appreciated.