Being unhappy with the single light bulb in trailer tail lights,Iwanted LED.I removed the tail lights off my 97 towlite.Remove light socket and wiring off back plate of tail light. Remove all high ridges of plastic using sanding drum on dremel type rotory tool.I used universal 10 light LED light kit from harbor frieght tools($39.99 for trailers, inc. wiring).The LED was to large for the interior space behind the org. lens.I removed the rear housing of the light to get to the guts of the LED , then with a hack saw I cut about 1/2 inch off the top and bottom of the LED guts(careful not to cut the PC board that hold the LEDs)This light is made with plastic studs(non-tapped for theads). I used #4 screws 1/2 long with 2part plastic weld expoxy to mount LED guts to org.light back plate & snap on org. lense. Remember to add lengths of wire (solder&heat shrink tubing)for easier hook-up as the LED wiring is to short(I had to cut wires from sealed rear housing)MAKE SURE OF A GOOD GROUND.