Does it possibly have a switch/button for it....maybe on a panel or near a door.
My trailer has the first overhead light nearest the entrance door wired to a rocker switch on the main panel. If the main panel switch is turned off, you cannot turn the light on at the light itself.......but you can turn the light off at the light itself if the rocker switch is turned on. You'll need to make sure the wall switch, and switch at the light are both turned on for the light to work.
The reason for this, is you leave the light turned on at the light...then use the rocker panel switch to turn the light on/off when you enter/exit the trailer. That's a lot easier than fumbling around in the dark trying to feel for the switch on the light.
2011 Flagstaff 831 RLBSS
I used to be addicted to time travel, but that's all in the past now.