There are a lot of choices for LED lights for a trailer. All you need is a 12-Vdc LED light. In my trailer I have two lights, and each has a three position switch that allows me to have a lower light level and a ^HIGH light level, and of course OFF. The high is so bright, we do not use it as much as the lower level. Do an internet search for 12-Vdc LED lights. Pick the one you like.I bought a 2006 Fleetwood Williamsburg popup, I would like to replace the lighting inside with LED, any suggestions would greatly be appreciated.