Just bought a 1971 Duster, 340 4spd. While driving it home noticed the lens on the ammeter was discolored. I touched it, extremely hot and soft. could not see what the gauge was reading. Do you think it is simple as a gauge with huge resistance or something else I should look at.
Thanks
Chances are, the gauge studs are loose in the buss bar, or, the wire connections on those studs are loose and/or corroded. If you have a high output alternator and lots of power draw (like a high powered sound system), that can do it too.