While I was on leave from Iraq I got my 83 running finally after almost 6 years of ownership. I wired up an alternator from an 87 and up splicing into my 83 wiring harness. I studied and compared the wiring from each set of years and I'm pretty good with schematics so I'm pretty sure I got it right. But my alt seemed to be runningoverly hot and was only charging at around 12.5-12.9 volts, checking at the battery. I know its supposed to be in the high 13's to low 14's. The wiring did not get hot though so I know its right. I didn't have time to take it to the parts store to get it checked and yes I know this should be my first step. But anyway does any of your alternators run what seems to be hotter than normal?