Hey everyone, I’m chasing down a no-start, no-power issue on my 93 North American FD. After a massive overhaul of the car (restoration of interior, replaced the charging harness) I’ve got an issue that is driving me crazy.

I’m not getting power to the ECU, starter cut relay, or gauges.

Ignition switch to on, and I’ve got no power to pin B2 at the ignition switch. I realize B2 is an input to the ignition switch but regardless, I’ve replaced the ignition switch just because it was probably time, still no dice. B1, ACC and IG1 have battery power, but B2 and IG2 are kaput.

This is probably a ground issue? I have looked the whole car over and all the grounds are intact, and have recently been redone and greased.

Any takers on helping me solve this problem? Thank you all.

 

According to the wiring diagram, B2 connects to the AC circuit, and the AC circuit appears to ground at location 6 and 7. I found location 7, and it looks good, I can’t find location 6 behind the dash somewhere… just to amend my first comment about checking ALL the grounds.

Where is ground location 6? Or am I barking up the wrong tree?

Also, during my search I found a loose connector for the A/C compressor and plugged it in. Now the fan comes on when ignition switch goes to ON. Not sure if related, just providing information.

 

do you have the wire attaching the 2 fuse boxes installed?

 

Attaching them? Yes.

I’m embarrassed to say I have spent weeks chasing down the fact that I didn’t have the main fuse box plugged into the front harness. 😂


All good now, I started the car for the first time in a year last night, and I couldn’t be happier.