Voltmeter moves with the blinker on

[RAD]

I was driving at night and came to red light , put the left blinker on and my voltmeter start moving in the rythm of the blinker. Is that normal? The voltmeter is stock. I had headlights and the radio on. Any suggestions? Thanks.

 

[The Green GT]

Mine moves when I press the brakes, turn signals, wipers. Its normal.
It does not move much though.

 

[HISSIN50]

It happens when the output drops. It's real common on 2G alternators but not as much with 3G's.

Mine acts about like Eric's though (675 RPM idle) with a full load of crap going.

 

[turbogt]

Could be the regulator going.. Mine does that too right now, which is why I have a 200 Amp PA performance alternator in the mail...

 

[RAD]

My idle is set at 550 - 600 rpm, anyway thanks guys.