Color coded factory radio wiring diagrams

Hello, we can look, but it might be tough with that year. Plus, we need a lot more information on the vehicle. It's a Chevrolet, but what model, what size engine, what sub-model, or if you can give us the VIN number, we can try to look it up from that. But definitely need to know more about the truck.

I see by your previous post it's a 2500, but can you give the engine size and if it's a K10, K20 series, or C10, C20, C30? As much extra info will help the search, and VIN if you don't mind giving us that.

These were the only two diagrams I could find from that far back. Hopefully one of these looks like the wiring you have in your truck. I'm sorry I couldn't be more helpful, It's really tough to find diagrams going back so far.

I found this in my search as well, I thought it might be able to help you with future issues. It's just a general manual for light service trucks from 1976, but maybe it can do you some good alone the way. It's a pdf. file.

http://www.73-87chevytrucks.com/techinfo/7387CKMans//Service/ST_330_76_1976_Chevrolet_Light_Truck_Service_Overhaul_Supplement.pdf

I'm glad it was the right one. It took me awhile too. If you don't mind, can you hit the Yes button where is says "was this answer helpful". I'd really appreciate it.