GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hello, sorry for the delay, Do you still need help with this question? if so, how many terminals does your new fuel guage have?
well most are all 3 terminals, so I am thinking that the case on yours is the ground, then the pink/black wire in the harness is key on power and the pink wire is the sender wire,.black would be the ground, I cant say whch way to hook the pink and pink/black wires to it but if it works in reverse, switch them, Here is a link to the factory guage setup
goes it have a metal housing, if so have to tape a ground to it or solder to it,I sent the factory diagram for s 1985 and not being there looking is a bit difficult so,, I am thinking you have to ground the housing
yes,,, and that is likely the factory ground anyways,it grounded that way to the board
ok, your welcome., Please remember to rate my service I have provided, Rating does NOT close this post so you can still get back with me on this post and thanks