I have a 2003 Mustang
with Mach 460. About a year ago, I took out the stock HU and put a Kenwood receiver. I also have subs. Everything was working but then one day, it played for about a minute and cut off. I can't get it to cut on from the harness. I did get it to turn on by connecting it straight to the battery so the receiver is working.
I have a 12v to 5v converter to stop the "pop" when it turns on. I have the converter connected to the amp turn on wires, as it should be. I then have the amp ground grounded to the chassis. I then have the wires matching the harness adapter connected to the receiver harness. The adapter said to connect the grounds, not to ground them. I have tried both ways. I have redone all of the connections so that shouldn't be the problem. I used a tester and checked each connection and everywhere (including ground) is getting power. Previously I have had a short with the car harness and only working when I lift it, to counteract that problem, I had it ziptied higher up inside the dash. But that's not the problem, it won't turn on at all. My ground consists of: the amp ground (from the adapter harness) and the converter ground. I have also tried adding both grounds from the receiver and adapter. I don't know if there is something I'm missing or what could be wrong. Thanks