Thor Forums

[Forest Grump]

Inverters supply 120v AC power to your coach via a 12v DC source and have nothing to do with 12v DC other than using it. Converters take 120AC and convert to 12v DC. When you are plugged into shore power 120v AC the converter will supply the 12v DC power. A 12v breaker has to be close to your batteries, by law. Find the red wire attached to the 12v battery and trace it to the fuse, it may be a relay. The other major connection has to do with the BCC, it will be located in a cigar shaped and sized rectangular box on your firewall, under the hood. It has a reset button. Push it.

The 12v red line ends up in your power panel. This panel contains both the 120v AC circuits and fuse relays and the 12V DC circuits and fuses and relays. These may be a main 30 amp fuse, see if it is blown. Make sure connections are tight. If you don’t have 12v here then it is between there and the batteries.
Ford as far as I know does not make the coach, Thor does. Trace the problem from the batteries - the source to the user point with a simple 12v lamp circuit tester.