The blue piece with the sockets is over at my buddies house, as he is soldering the sockets in for me. There is one socket that is not there, because it is wired to the truck. It has a black and a white wire coming out from it which then run under the carpet. I need to tell him which socket to leave open this one. I am assuming it is either the 4wd light or the brake light. It is an 84 k5. TIA.