Sawbuck, I'm with you, the only wire on my sending unit on the 68 stepside is from the tank to the fuse block?? Not that I would assume that any of the wiring on this truck goes where or is the color that it is suppose to be. But there is only 1 O N E !!! so if this is the pwr to the sender where is the wire that should go to the guage???? only one connection on the sending unit.