Just purchased a used RV and owner did not go over any of the operations with me. Mostly because I think he didn't know and didn't care if I found out or not. Anyway, got most of it figured out already (threw in the towel on the control APP), except for 1 switch. When flipped, nothing seems to happen, either inside or outside. It is the left most switch in a gang of three by the door. The other two control the LED lights for the 'dinning' and 'living' room lights. I have found no lights that I cannot control. I may be missing something basic, but for the life of me I cannot figure this one out. I thought I could trace the wires, but that went nowhere fast. I'm not without skills - Just installed three Furrion cameras (two side and one backup) and they work great. Somebody, please take pity on me!