electrical flutter
If it bothers you, you could purchase an alternator with higher output than the factory ones. https://ls1tech.com/forums/wiring-stereo-electronics/326275-alright-who-has-fixed-flickering-lights-problem-its-driving-me-insane.html
https://ls1tech.com/forums/general-maintenance-repairs/264483-headlights-fog-lights-pulsing.html
Its not the stereo stuff. As I just bought the car and it still has the factory stereo. I own a electronics shop and tested the battery and alt voltage. It just maybe a little underrated. I have a 200 amp in my 95 Impala SS, so believe in lots of amps!
Thanks, Ill keep my eye out if anyone has any ideas, but reading those posts really helped.


