We had issues with our old Sharp TV acting up at the same time (coincidence?) as the ignition was being inconsistent while parked during super hot weather in Nebraska in 2012. I don’t remember the details well, but that’s when I discovered all the front cap devices were in outlets on the same circuit as those running along the living area/slideout street side, and my wiring diagrams confirmed it; I think the ice maker was outlet numero uno on that circuit.
While exploring the issues, I believe I found what I thought was the circuit ignition cutout relay inside the fridge ice maker outlet, one of the two behind the outside fridge access door and to the right; the fridge plugs into a circuit off the 50amp Main breaker box and the ice maker inside the fridge into the 30amp inverter breaker box. I think there were a couple of 12v wires entering the ice maker outlet or an associated junction box, which made me suspect that’s where they put the cutout relay. Seems like I may have commented here about it at the time or since.
Forgive my poor memory on this, Jeff... we haven’t been able to use the coach for awhile, so some things have dimmed (brain surgery will do that to ya, as does old age) and my comments above may not prove helpful. But you might check that ice maker outlet if you can’t locate the relay elsewhere.
Joel