Newbie here, I have a 94 toyota 4WD, My fuel gauge went out a couple of years ago. I assumed it was the sending unit. I recently bought one, installed it ,and true to my luck, that wasnt the problem. So now I'm figurin it's the gauge. With my limited electical know how i tested it. It could be a wire or ground though. Does anybody know exactly how to test the gauge and wires? Thanks for any help