Need a 87 suburban wiring diagram

[Mkcustums]

Originally Posted by wildmanaaron

If the diagram posted does not work, go by the local GM dealer and ask a Tech if they will print one off for you. I bought a GM service manual for my 1981 Blazer since I was redoing a lot of the original wiring and it was the best source for schematics. Alot of the diagrams like the one posted come out of the Haynes books aren't correct a lot of the time.

I found my book and it shows the wiring different than shown above. It's a GM service book, very detailed. I just don't have the scanner hooked up to get the info to you.

I have gone to dealerships and had them print off stuff for me as well.

[danomano]

Maybe figured this one out it seems the alternator turn on comes from the computer. If the computer is not working then that is why only battery voltage. When I bought the turn I remember checking for codes and it would only give me "12" some maybe to computer died.

[danomano]

Forget that I found another person that had the exact same problem and here is what he did.

http://www.automotiveforums.com/vbul...d.php?t=751508