Since we boondock alot, I'd like to be able to see who's knocking on our door while we are inside the Escape Pod (the one area not visible, due to the frosted door window). I've thought about a backup camera, mounted over the door, but I don't want to drill holes for wiring, etc. Our Bambi has a 12 volt
outlet just above the bed, or I can tap into the batteries on the hitch. Any suggestions?