I am attempting to repair the radio in my '81 Ford 7700. I cannot find the pinout for the 5-pin connector on the back of the radio. I've measured the tractor side to try to find the hot wire, but don't show any power on any pins. I've checked the fuse, and it ohmed good.
This started because I thought the radio was dead, but when I was sitting in the tractor with it off, but the key on, I could just barely hear the radio when it was all the way siren, but on. If I turned it up, it wouldn't work. I have since electronics experience, so I thought maybe I could fix it.
Is anyone is able to show me a wiring diagram, I'd really appreciate it.
Thanks!
Brian
This started because I thought the radio was dead, but when I was sitting in the tractor with it off, but the key on, I could just barely hear the radio when it was all the way siren, but on. If I turned it up, it wouldn't work. I have since electronics experience, so I thought maybe I could fix it.
Is anyone is able to show me a wiring diagram, I'd really appreciate it.
Thanks!
Brian
