[Starmaster]

Hi David,

We have a 2015 3160RL with the Legacy package, part of which includes tank heaters for the gray, black, and fresh water tanks. In the cabinet with all the switches and tank level indicators, we have three blue switches that are marked "Tank Heaters". In our fuse panel we also have three 12v fuses marked "Tank".

The heaters are actually 12vdc 65watt electric heating pads stuck to the bottom of the tanks near the tank drains, running along the length of the tank. They are thermostaticly controlled to come on at 45 and go off at 65 degrees when you flip the switches.

If you don't have the extra switches, fuses, and an instruction manual for the tank heaters, I would assume your 5er does not have them.

Dave