My headlights along with all the other lights in my car flicker in intensity. The voltage gauge (aftermarket) Goes from 13.8v to 14.5v about 8 times a second. At idle (600 RPM) everything is steady at 12.8v. Once RPM is brought up and voltage increases to 14.5 it starts bouncing between 13.8v and 14.5v.
I have a dual field alt and the matching voltage regulator.(74 Dart) Both are new.
What can I do about this? If I where the car ahead of me, I might think that I was being flashed or he had a loose headlight.
Is there such a thing as a faster reacting regulator or is mine bad out of the box?

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

14.5 is too high. Is your alternator really new, or is it a 'rebuilt/remanufactured' unit from the parts store?

Really old thread with info and lively debate on the usual fix here.

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Too many people who were born on third base actually believe they've hit a triple.

Bad alt brushes or broken holders will cause intermittant connections that could cause your problem. They are easy to remove & replace.