I just bought a used 2012 Arctic Fox truck camper. I have the Owner's Manual, but it is very poorly written and doesn't tell me how to use some of the features. There are two white switches on a white stitch-plate above the sink to the right side. The one on the left is for the cab-over bed-area lights and the Fantastic Fan. But, I can't figure out what the switch on the right is for? Anyone with a Arctric Fox camper know? Thanks!!