hi all, newbie here. i need to see if any one knows the oem wire color for my 79 k5, all of the wires are cut at the firewall connector. the guy i got the truck from ripped out the stock fuel tank and the wires just to put in a 6 gal fuel cell in the bed with no gauge (DUH!), so i just had a new custom tank made to go back under the bed floor that will clear my custom hide-a-hitch, so i need to rerun the wires so i can tell when my gas guzzler is gettin low on fuel. any help would be appreceated, thanks.