We just got this motorhome. It's a 35T. There is a switch above the thermostat that no one knows what it is for, not even the dealer we got it from. Does anyone know what this may be for? Doesn't work any of the lights. It's right behind the refrigerator and I even thought it might be for it's light but it isn't. Don't guess it's that important just don't know what it is for. Any ideas would be appreciated. Thanks