I used nothing but LED lights on the "Little Tow".
I have:
* teardrop shaped stop/tail/turn lights
* amber markers on both sides at the front
* red markers on both sides at the rear
* dome-light type floods just inside of each door
* A spot-type reading light mounted to the front wall right between our heads when we lay down
* I'm planning to put in a light under the rear hatch for night-time cooking
* Also thinking about a porch-type light on the outside near the door
* I added a top center multi-function light on the roof at the rear of the tear, just above the hatch.
This unit has a group of LEDs in the middle that go on with the brakes, and then a smaller group on each side that flash with the blinkers. . . . .

The tail lights on the "Little Tow" are down so low that I was a little concerned about visibility. The third light at top center really helps!