I'm swapping my jdm b18c from my ej6 into my em1. I swapped over the usdm em1 b16 harness onto the b18, and bought a obd2b to obd2a harness. ***** stopped working like my radio, turned the key and the CEL came on, when I shut the door it shut off like it was wired to the dome light. I have no idea what is going on and need it for this sunday's honda-tech cruise down the kancamangus highway. Am I forgetting anything?!

 

Well I know the dash harness if different on the OBD2a and OBD2b so maybe this could b an issue.

 

But an OBD2b to 2a harness should take care of all of that.

Where did you buy the harness from? I have a sneaking suspicion that your problem is bad wiring there. That's the only thing I could think of that would affect your radio and crap.

I'm sure you doublechecked that you have everything plugged in there right? Once, I thought I had my ECU plugged in completely, but one of the plugs was really unplugged a bit, and cause all sorts of strange crap for a few miles until I figured it out.

 

checked out the problem, and i found that under the hood fuse box has a "back up lights/radio" fuse, 7.5 amp that was 12.1 volts on one side, and 1.3 volts on the other. needless to say, easy fix but finding it was a ****ing bitch.

 

Has to be bad wiring. I have done 100's of this same swap, and that may be a culprit.