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Quote from: 454Man on August 16, 2013, 04:52:27 PMAlternator voltage is fluctuating between 13 and 15.3 under load. I tired the reg wire to the charging post. Still the same thing. . Some reason I'm thinking it's a ground issue idkSo, measured at the battery, output voltage fluctuates between 13 and 15.3, using the headlights for the load. The alternator's 4-ga charge lead is connected directly to the battery positive post, and you connected the regulator #2 wire to the output post of the alternator. Correct?Measure alternator output voltage directly at the alternator output stud. Connect a temporary jumper between the alternator case and the negative post of the battery. Any change?Do you have an inductive DC ammeter module for your Fieldpiece meter?
Alternator voltage is fluctuating between 13 and 15.3 under load. I tired the reg wire to the charging post. Still the same thing. . Some reason I'm thinking it's a ground issue idk