this must be simple to somebody.
gauge climbs nearly to 18v at 3k rpm and beyond
gauge stays above twelve but the little charge light on the dash is almost on..not on all the way at an idle.
belts tight, connections good.
accepts load at idle, charge light almost goes out entirely.
volt regulator is doing something. charge light comes on not all the way, after shutting things off.
swap alternator or give this a chance. it does get warm, alot more amps than previous alternator.
goofy volt regulation, but working.
smack the alternator with a hammer?
very dynamical..seems to tell me not to just swap it.. but drive along trip or something.
fresh clean brushes at the slip rings.