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you might try looking on the gm upfitter guide, but honestly no telling with a wire like that depending what was installed and who installed it
nothing on the upfitter guide either. This is a factory installed harness that was tucked up behind the radio. This truck was never outfitted as a squad. I put the center console in, as there was a jump seat.
probably just going to have to trace it back to the other end, there are a few guys with ppv's on here but no telling when you might get a response from any that might happen to know. since it is wrapped in electrical tape should be easy to trace backwards
that's the plan tonight. I have seen plenty of folks asking about the harness but no real answers. Following it into the engine bay will be fun since it disappears up in the dash. Man, I love electrical! ha!! I appreciate your time all the same!
thanks for this! based on what i am seeing, i can use the constant hot and ignition wires to supply siren power and possibly backlighting but, that would be the extent of it and render the remaining wires useless?
a tester/toner like a cable or telephone repair person uses can be very useful for this stuff.
That heavy red is probably the 50A constant hot for the console area. The others should be easy to trace from the diagram posted above.
