1990 Lebaron 3.0, problem with charging circuit



drained one battery already. Installed a new one, but am only reading
11.8 volts while car is running (12.2 while car is off). There's about
60 milliamps of drain between negative cable and negative battery
terminal (obviously while car is off). I think this is normal, but
regardless this isn't the problem. I imagine it could just be the
alternator. I had a problem like this some time ago, and it turned out
to be a fuse (some part of alternator circuit?). I checked every fuse,
even with a continuity tester, so unless the fuse box is messed up,
that isn't it.
About a week ago, I left the lights on for about an hour. It started
back up, and I raced it around town for ~1/2 hour to charge it back up
(bad idea? Should have just left it idling?). Don't know if that has
anything to do with it. Perhaps a little before that time, or after,
can't remember, the meter on the dash was reading a bit higher then
normal (I guess a volt or 2?). Prior thanks for any suggestions.
.



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