Just bought a new TT last week found that the 12v light in the ceiling of the bathroom doesn't have a on-off switch in the wall and my wife and grandkids can't reach the light in the ceiling to turn i...
Our previous trailer had the same "dumb" bathroom light without a wall switch that my wife couldn't reach.
I installed an LED motion activated light (battery operated). When ever we walked into the bathroom at night it would automatically come on. Batts seemed to last forever, it de-activated itself during the day when it was light. No wiring required.