View Single Post
Old 11-02-2015, 03:32 PM   #5
70gmc4d
Registered User
 
Join Date: Oct 2015
Location: Billings, mt
Posts: 5
Re: Color Wiring Diagram FINISHED

Quote:
Originally Posted by chuchito View Post
I have a 1972 GMC suburban, and the wiring is driving me crazy. The diagrams I found on here look similar to what I see under the hood but not exactly. Also, I don't see the blue wire that is supposed to be to the oil pressure on my harness but my guage cluster does have a oil pressure guage. The engine harness actually only has 5 wires. I unplugged it and looked at the female plug on the firewall and it also only has 5 inserts. The five wires I have are the tan, dark green, purple,pink, and brown with white. Can someone chime in?
My 70 GMC has a mechanical oil pressure gauge that is plumbed in the block next to the distributor. And the 70 gmc has 4 headlights up front.
70gmc4d is offline   Reply With Quote