Oh, I went through that- tore out the breaker panel, traced wiring (no ceiling fan or lights), saw some mystery wires leading back to a.....switch under the galley, which had not lowered the last 1/4"!!! Learned a lot about the wiring, though. I didn't like all the ground wires in a giant wire nut with 10 feet of tape, put terminals on all of them and screwed to a buss strip.
2014 Rockwood Freedom 1950
2014 Subaru Outback 6cyl