Dennis12 wrote:
BarneyS S.E. Lower Michigan Moderator
Maybe his model is different but mine has heaters for the grey tank and the black tank. My switches for them are on the panel that I check, Fresh water level, black and grey tank levels, Battery level, ect. I can turn mine on, wait 5 minutes and feel the bottoms of the black and grey tanks and they are warm,
Although not a 5th wheel, my trailer is the same year and model line as his and electric tank heaters were not an option at that time as far as I remember. If he does have elec tank heaters they must have been installed aftermarket.
In addition, there would be no way to feel the bottom of the tanks to find out as they are wrapped with a thick layer of fiberglass insulation and then a very hard black plastic (or some other hard material) cover.
I know this because I had to remove mine a couple of years ago to fix a tank leak.
Barney