Just finished wiring the trailer hookup wiring, and now the interior lights don't work. I went by the manual, and the rest of the wiring seems to work. However, the book shows red black yellow and white, and what I have is red black yellow and green. I have the 12v black and white wire coming out of the bottom of the camper, but I'm not sure where to go from there. I used all but the green wire for the running and tail lights, and tried hooking up my 12v source with black as the ground, and the white wire I connected to the green wire. Nothing. I can get the lights to work if I hook up the white to the green wire and then black to black, but then the right taillight stays on. Any ideas?

nevermind, I figured it out.