Switch below furnace?

[MBart]

I have a 2014 2313 toy hauler, it has a light switch below the sink and furnace vent. What is it for?
I am also a first time owner.

[Jjs2000z]

Can you upload a pic?

[EnduroRdr]

I have a switch by my sink (work and play Toy Hauler) and it is for the electric element in the hot water heater for when I'm plugged into shore power if I don't want to use the propane option.

[brandonv]

Is it a white switch? Like a light switch? If it is, its for the heated tanks. Don't leave that thing on or your battery won't last the night.

[MBart]

Here is the switch I was asking about. I think it's for the heated tanks as we have the article package in it

[MBart]

Thanks for the responses.