My dad '74 was serviced by hall pantera about 20 years ago. I believe a lot of electrical work was done and I'm pretty sure the voltage regulator is not where it should be. It looks like a motorcraft alternator and I'm wondering if the voltage regulator is internal or external. Measuring at the battery terminals I'm getting btw 17 and 18 amps. The headlights pulse and amp meter surges. Any help is appreciated. I thought it would be easy to just replace the voltage regulator.
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