Heated grey and black tanks

[cnugentak]

My holding tanks are both labeled with "heated tanks". But I have no idea how to turn on or off this functionality. Any ideas?

[mfa]

In my rig, the switch is above the bathroom sink, believe it or not.

[bob3nliz]

My switch lights up red when on. It's on side of sink in bathroom near fan and light switch. BobnLiz :)

[robfogle]

Depending on the model and year I imagine that they are different. On My 2007 Endura 6340 the water and holding tank area is fully enclosed and insulated. There is a dedicated heater vent into this area. So whenever you are running the heater you are also pumping warm air to the storage tank area to keep them from freezing. A nice side effect is the floors in the bedroom stay nice and warm.