Regulator assembly for early Prestolite alternators such as AMA5102UT. Regulator P/N AMA1004S. NSN 2920000782351. Made in USA.
Early "pin connector" type regulator, if you have the later version with spade connectors, see AMA2004AS.
After installing this part, test the charging voltage (alternators output voltage) at the batteries. 27.6 Volts is the correct setting. Adjust regulator as required. Contact us if you need further assistance.