Mine also stopped working within the first few months.
They obviously are NOT water proof and they are in
the path of the monsoon created when you tow in
Other than total replacement with a sealed marine unit,
I'd suggest cleaning the contacts in the socket.
Grease the bulb base with silicone GREASE not silicone
caulk. Sometimes this is called O-ring grease.
Then mount a surface switch inside your storage
compartment. Your compartment door is right there
around the corner so it would be easy to reach in there
and flip it on and off.
I haven't done this to mine yet.
Last time I hitched
in the rain and dark I put my truck in reverse, set
the parking brake and shut off the engine but left
the key in run so my backup lights were on.
It's still a BAD choice of light and it's in the worst possible
place for getting wet over and over.
ARE YOU LISTENING FOREST RIVER?!?!?