I have a switch in my Kodiak by the front door that operates the inside light right above the doorway. Turn the light on then try the switch to see if it turns it off and on. It isn't your porch light is it? Please post your model number in case someone has the same trailer. Welcome to the forum. Look forward to your participation.
"We were not placed on this earth to see through one another, but rather to see one another through!"
2013 Timber Ridge, 2013 GMC Sierra 6.2 L