Thanks Jon for that information about the 0-80 / 0-90 question. Mine is 0-80 with the high beam light at the bottom. It works.

I plan to do as you say and get it out and see what exactly is going on.

I haven't looked at the attachment method yet. Are there any secrets I need to be aware of? I assume there are a couple screws or nuts on the back side that , when removed, will allow the entire gauge assembly to be removed from behind the instrument panel?

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)