Welcome to the forum. You've come to the right place.
Most lights in an RV are 12 volt, as rvjimmy said. Do they work when you are plugged in to electricity?
Steve, Mary & Buddy our 2-year-old Chihuahua mix
1995 36' HR Endeavor, 460 w/Banks, 2005 PT Cruiser
Fulltimers originally from Michigan, hanging out in Oregon for a spell.