I wire brushed the threaded stud and the ring connector. I also used emery cloth on both.

I then installed an external star washer over the stud, prior to installing the ring connector. It just sat on the base of the stud before. Then I installed the ring connector secured by it''s nut with a captive star washer. All is working now.

For future reference, is an "always empty" gauge reading usually attributed to the hot wire side of the circuit and that an "always full" gauge reading can usually be attributed to a ground issue? This assumes that the gauge and sender are known to be good.

1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)