Alternator Pulsing

Duh me. I forgot to mention I put in a later style 2 field alternator, with the solid state voltage regulator.

I have the voltage regulator within 3 inches (on fenderwell next to alternator), wires aboout 4" and 6" long.

This could very well be a "poor ground" problem. It is imperative that the battery NEG and the regulator "see" the same ground.