I wired mine so that the battery
switch removes the battery
from EVERYTHING so that I can (finally - maybe - perhaps - I hope!) stop running my battery
to a zero charge state every time I come home and unhook. As it was the batt was still running the "profane" detector, the circuit boards in the fridge
and various & sundry other stuff. A week or two and sure 'nuff - batt is dead again. I used the same race car battery disconnect switch that is featured in other posts in this thread (I had one laying around anyway).
Now its just part of my "pretrip" to turn the battery back on, and hit the monitor panel switch to see if I need to plug the converter in to recharge the batt before leaving
By the way - just in case I come down with the occasional bout of "OOOPs", the trailer breakaway switch is NOT disconnected by that switch!