I am putting an aftermarket radio in my avalanche and its a 2500 if that matters. The aftermarket radio is a alpine. But im having issues knowing the stock wires from the truck and knowing where they plug into on the radio harness. I have looked at diagrams but im still not sure. I do have onstar in the truck but dont use it. there is one set of plugs that have 9 plugs/ wires not sure what those are to. then 2 more sets of plugs that are connected together, i can sort out the power, lights, and stuff but the others i have no idea and then there are matching colors like 2 greens and 2 black which is which? if anyone knows that would be great!
and its not bose, the stock head unit is delco.
and its not bose, the stock head unit is delco.