Installed male Molex pins to the wires of the LN-200 Wing Tip Lights and then inserted the pins in female connector housings. Connected the lights with the male connector housings in the wing tips. I had to enlarge (filed) the race track shaped holes in the Extensions to be able to put the housings back inside. Installed the lights onto the mount brackets. There is no mention of the rubber O rings in the instructions but they came with the kit. I decided to use them but had to use crazy glue for them to stay in the groove.