No schematic just bought it with the aftermarket radio already set up in it. It will hook up in a different Chevrolet just fine. When I probed the factory harness with a test light on the truck where The red 12 V ignition wire plugs into the harness I have no power at factory harness. So tells me nothing wrong with the radio have a bad 12 V ignition wire that plugs into the radio. My radio fuse in the fuse block is not blowing and I've got power there as well. So somewhere between the fuse box and the factory harness. I'm losing my power
1993 2500 Chevy Aftermarket Radio Harness issue
Hello, I have got 1992 Chevy Silverado 2500. I am currently having wiring issues on the radio. To answer so quick questions the factory harness was not been cut off it has been plugged in to an adapter to splice to the radio. The fuse on the back of the radio is good, using a test light I have checked my fuse block under the radio fuse and I am getting power but when I trace it back to the factory harness I have no power this is on the 12 V ignition wire(Red). I do have power on the yellow 12 V constant memory wire. So just taking a shot in the dark I don't think it's the ground on the factory harness otherwise I would not have any power on my 12 V constant (Yellow). Does anyone have any suggestions or has had the same problems as me?
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Hey I had this same problem on my truck! tore the wires out to take a look where they went to see if i could find a pinch. The yellow wire keeps constant power running to the radio even when the truck is off, helping the radio keep it's memory. If you take the yellow wire and just hook up an extension to it you can run it through your dash and have it come out by your fuse block to the bottom left of the steering wheel. take your tester and see what fuse holder has constant power to it with the keys out of the ignition and just pull that fuse, strip the end of the wire and put the end of the wire in the fuse holder and put the fuse back in. having the wire wired straight to the fuse block will keep power running to your radio and it will function like it did before. this will probably be the easiest fix to your problem and since i have done it to my truck i have had no problems
Okay, this is what I had ended up doing just like you instructed. It all turned out great everything is working again as it should. I knew previously mentioned that the yellow wire was not the ignition wire. Yellow is always the Constant 12 V memory wire. Thanks for the help and to everyone else thank you as well.
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