Thanks for the reply FLYTYER. The monitor system in my coach is powered by the chassis battery so when I disconnect the chassis battery the monitor panel is inop, even the tank levels. When the batteries were replaced, they were wired the same as before, of course I always assumed, hate that word, that the panel was reading the house batteries, as I feel it should, may be wrong. Tried to get a schematic from Fleetwood, can't even get through anymore!
Thanks again!