Thanks for all the replies! I should also note: the on board monitor shows the coach battery levels to be good (3/3). When I hook up to shore power, it shows them to be charging.
We do have two switches that I haven't figured out. One is on the driver's side, above the control for the mirror adjustment. It's an on/off rocker switch. I thought maybe it controlled lighting, but flip it on and off and I still don't know what it's controlling.
The second is at the rear above the sink area, next to a 12V. It doesn't control that switch and again, we can't figure out what it's controlling but the switch itself lights when you turn it to on.
ETA: Oops, may have found one answer. This says heated mirror for the one above controls. http://chinookconcourse.tumblr.com/page/4
