I have been in the process of (slowly, it seems) converting my '86 eta to 325i specs. My latest hurdle is the wiring.
The engine harness is from the '89 donor car, and I ran into some differences under the dash I was not quite expecting. I knew the idle control module in the '86 would become history, of course. My problem centers around a 3-pin connector under the dash of the '86 which connects to the engine harness.
Here is what I have on the '86. The colors refer to the different wires.
3-pin connector
Car side of connector: Black, green, yellow/white
Engine harness side: Big green, little green, yellow/white
1-pin connector
Car: Green/black
Harness: Blue/white
The 3-pin connector in question is, I think, C105. I connected my VOM to the larger of the green wires on the harness and found that it appears to be the power supply to the ignition coil. The other two wires on that connector are a complete mystery. I think I've figured out the single-pin connector goes to the park-neutral safety switch.
Now for the '89 connectors.
White 3-pin connector (C131?)
Car: Green/black
Harness: Brown, green/violet, red/blue
The green/black wire connects to the red/blue wire.
Black 3-pin connector (C136)
Car: Black/red, black/violet
Harness: Violet/gray, black/gray
Black/red connects to black/gray and black/violet connects to violet gray. Near as I can tell, these wires are all associated with the air conditioner.
I used the online Electrical Troubleshooting manuals for my information, but while the '89 manual is quite usefull, the manual for the '86 is not much help at all.
So, I need help. I knew I'd run into some issues, but this has me pretty much buffaloed right now.
The engine harness is from the '89 donor car, and I ran into some differences under the dash I was not quite expecting. I knew the idle control module in the '86 would become history, of course. My problem centers around a 3-pin connector under the dash of the '86 which connects to the engine harness.
Here is what I have on the '86. The colors refer to the different wires.
3-pin connector
Car side of connector: Black, green, yellow/white
Engine harness side: Big green, little green, yellow/white
1-pin connector
Car: Green/black
Harness: Blue/white
The 3-pin connector in question is, I think, C105. I connected my VOM to the larger of the green wires on the harness and found that it appears to be the power supply to the ignition coil. The other two wires on that connector are a complete mystery. I think I've figured out the single-pin connector goes to the park-neutral safety switch.
Now for the '89 connectors.
White 3-pin connector (C131?)
Car: Green/black
Harness: Brown, green/violet, red/blue
The green/black wire connects to the red/blue wire.
Black 3-pin connector (C136)
Car: Black/red, black/violet
Harness: Violet/gray, black/gray
Black/red connects to black/gray and black/violet connects to violet gray. Near as I can tell, these wires are all associated with the air conditioner.
I used the online Electrical Troubleshooting manuals for my information, but while the '89 manual is quite usefull, the manual for the '86 is not much help at all.
So, I need help. I knew I'd run into some issues, but this has me pretty much buffaloed right now.
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