Gas Tank Removal Questions

[hatzie]

Originally Posted by 72GMCburban

here is a dumb question, but where does the tank wire harness go to? I know it hooks up on the sending unit, but where does the other end attach? Is it a ground? Power? Anybody got a pic or diagram? I pulled some wires after a little wire fire and now the engine is not getting fuel!

Ground goes from the sender ring to the frame except the TBI trucks that have a harness going through the top of the sender into the tank with a ring terminal on the end of the ground wire.

The sender wire itself goes to a pigtail on the RH frame rail. On single and dual tank systems the pigtail wire on the RH frame rail goes to the bulkhead plug.
On 73-80 dual tanks both sender wires go to the dash switch and one wire goes back to the RH frame rail pigtail wire.
On 81-91 dual tanks the sender wires go to the valve and one wire goes to the RH frame rail pigtail wire.
TBI trucks have a 2 position Weatherpak disconnect and a ring terminal ground on the frame.