I've been trying to reconfigure my wiring harness to its original specs, but something caught me off guard. While following the engine wiring schematic provided by austinthirdgen.org, it seems that a few of the wires share the same location in the harness.

For example, it says for the ESC module wire to go to position A8, but also says for the ALDL connector to go to A8.

It says the same thing for the Coolant temp sensor and the torque converter lockup solenoid to go to A7.

What do i do here?

Also, with regard to the fuses/instrument cluster wires coming from the ECM harness, which pin does the ESC pinkw/black wire go to? How about the pink fuel injector wires 1&2 as well as the tanw/black torque converter lockup wire?

I know this is pretty in-depth, but any help is appreciated.

 

Head over to www.diy-efi.org/gmecm. Under ECMs, '7747 there are factory wiring diagrams. The '7747 is very close to the '8063 and '8746 ECM. They will be helpful.

RBob.

 

Thanks for the info, but I'm most concerned with my fuel injector wires now. Ive realized which wires go where in the ALDL connector, but the white and red wires from fuel injectors 1 and 2 have nowhere to go. They seem to have the same type of connection as the ALDL connectors, and I have seen in diagrams and other harnesses that they have their own harness that goes to the fuse panel. For some reason I have no such harness. Do they go to the ALDL connector and then to the fuse panel, or am I not looking hard enough for this fuel injector/coolant fan relay harness?

It seems the aforementioned harness appears on 85-89 MAF equipped TPI cars...what about 1988 TBI cars? WHERE DO THESE WIRES GO?!?!?

 

You can lead a horse to water, but you can't make him drink.

RBob.