67 Barracuda Heavy Electric Load

DallasMan2000 said

Thank you everyone for your replies. I have read them all and working on getting more info. O’Reilly’s and Autozone would only test for good/bad on the alternator so I set-up an appointment tomorrow with an auto electric shop that say they can get actual amps.

Also, this may not be useful, but I did get a voltage reading from the battery after charging all night and the trickle charger shutting off - it came in at 13.11 volts.

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Most (all?) parts store alternator checkers cannot test for full load output amperage, and MANY of these testers are either incapable, or the people operating them.

On a side note I build--from scratch and spare parts--an alternator tester back in early 80's at a parts store where I worked. Hand built ammeter shunts calibrated with the help of 2 or three different loads and load testers, meters were bought back then from Rad Shack. We happened to have a 15hp 3 phase motor in the back room, and so we used that. Biggest alternators I remember back then were large frame (heavy duty cycle) truck units, about 140-160A.

If you go to a real by god alternator/ motor rebuilder they likely can tell you.