This is the original wiring diagram printed by GM for dealer mechanics. You can follow the wiring in your truck from bumper-to-bumper. It will help you to understand connector configurations, and locate & identify circuits, relays, and grounds. Although the schematic is in black and white, the color of each wire is noted. You will not find this diagram in your shop manual. The schematic measures 8.5" x 11" when folded up, and opens up to 11" by 38". The diagram pictured is an example of this type when folded, but is not the actual diagram for your vehicle. Buy now for the best electrical repair info - the factory wiring diagram.
1977 Truck Wiring Diagrams C, D-80
This item is original.
11.00 x 8.50 x 0.10 inches
Covers the Chevy El Camino & GMC Sprint models including C-80 & D-80.
1977 Chevrolet El Camino Classic Standard Cab Pickup 2-Door
1977 Chevrolet El Camino Conquista Standard Cab Pickup 2-Door
1977 Chevrolet El Camino SS Standard Cab Pickup 2-Door
1977 Chevrolet El Camino Standard Cab Pickup 2-Door
1977 GMC Sprint Classic Standard Cab Pickup 2-Door
1977 GMC Sprint Standard Cab Pickup 2-Door
1977 Chevrolet El Camino 1977 GMC Sprint