Pulsating Alternator Gauge

Boy Matt I'm glad you posted. Made me go back out to my car and found I left the lights on!
Its nice to be useful! LOL
Not arguing here. Just noting what I see.
Not taken in a negative way at all. We're all just trying to figure out what best explains what we see.
There's a guy on moparts with the screen name Sniper. He's posted that his cars never show the dimming of the lights at idle, etc. But IIRC his are original v-8 B-bodies with the original alternators. Interesting though.