Tomar Industries G-G-R Adlake lanterns, item #807L, installed on a Ambroid kit caboose. The "L" designation means equipped with LED's. They also sell the same set with 1.5v micro lights, item #807.
Since I had to cobble together appropriate trucks for this project, I chose to use battery power (coin-type 2032) with push button on-off switch in the floor, using an Evan Design Mini LED Chip Light Kit, thereby eliminating fussing with a center-rail pickup and rectifier...
Evan Design light kit
It has worked out well enough that I made the same installation in two additional 'booses.
The 2032 batteries seem to have more than enough power and life to suit my frequency/duration of operation. Of course, I have to remember to turn them off (can be accessed without removing the car from the track) when done!....duh! However, 2032's are fairly cheap as batteries go.
TEHO, though and of course.
FWIW...
KD