randallss10
+1y
i have a 93 gmc fullsize truck. ithe fuel tank has 4 wire coming out of it. one is black and is grounded to the truck so i know it is a ground wire what are the other 3 wires. the truck has been striped of all wiring. i need to know so i can wire the pump and which one is the gauge wire any help would be nice(dont write get a book on that year truck i have it and the colors dont macth the truck)