fuel gauge reading full at emty

ok fellows, i get back to the truck this weekend maybe. i just recieved the computer and harness back from 66valiant thursday. once i get it started i'll get it up on ramps so i have room underneath to see what i messed up. i'll try to swap the connectors but it's pretty cramped on top of the tank. i don't think this is your classic mopar as it's a truck that came as a chassis cab when new.