I am not getting any power to my orange (constant 12+) wire for the radio. I have had the same problem with other GM vehicles. I always just ran another wire to the constant on the radio but I want this truck to be wired correctly. My question is: where is the fusible link for this wire if there is one and if not what causes the interruption of power, this has to be a common problem with GM vehicles. BTW, fuses are all good.
No, the horn and lighter do not work as well as the interior lights. When I touched a 12v+ wire to the orange wire the interior lights came on, I didn't try the horn or lighter. I forgot to post that this all happened during/after I changed the battery
Constant power source for your radio is usually fused through the horn or cigarette lighter. Check and see if these work.
Edit: Sounds like a fuse. Recheck your fuses with a voltmeter or test light. Fuses can be bad yet still "look" good.
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