I know this only my third post here, and second thread about the same issue, but I don't know what to do with it anymore.
I've had this truck a decent month or so now, and I've dealt with it's radio not working the whole time, and my boombox in the back seat doesn't get the best reception.
I bought it from my aunt who parked it after my uncle passed away about a year and a half ago, and I was told it worked when she parked the truck, and I have no reason to doubt her.
I've tried 3 different radios in this truck, the original tape-deck that it had, an Identical tape-deck from my Cummins, and an aftermarket CD player radio I had in my garage, none worked in it.
My next thought is that the wiring must be messed up, so I did some research and found the constant power wire, and ran a hot wire to the fuse panel, no luck. So then I try running a hot wire for the Key-on power, to the radio fuse in the fuse panel, no luck.
Later I found a little amber strobe light, like for a mail man or snow plow, and it needs 12 volts to work, so this becomes my "test light" and it lets me know that the constant power wire in the harness does have a constant 12 volts, interesting.
Then I try it on the key-on power wire in the harness, and sure enough it works too. So I decide to put everything back together in the hope that it might have just decided to start working, Nope, still dead.
The backlight comes on, and rarely the top bar of the third digit of the clock/station will light up, but rarely.
I don't get it. I really don't