Color Wiring Diagram FINISHED

[70gmc4d]

Originally Posted by boundstaffpress

V8 engine and cab


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I don't see the three wires to the trany. I see the one green and one black to the reverse switch. My 70 GMC has three wires, dark green and light green to the switch and the black wire I just assume is a ground. But you know what they say about assuming. Thanks for the diagram it helps a ton!