Still trying to determine what is excessive heat on my dad's alternator. With the motor warmed up and the headlight and tail light fuse removed, alternator heats to 110F degrees, (not bad, definitely touchable). Plug the fuses back in and temp. goes to 140F. NOW, that sucker's HOT! FYI, New stock alternator, battery checks out, charges w/in specs fine. Will say one thing, when you pull either the headlight or taillight fuse out the motor rpm speeds up at least 500 rpm. As always, thanks everyone!