How to fix headlight dimming issues on 2007 chevy tahoe
i have a 2007 chevy tahoe 5.3L flex fuel ls model 2wd and i am having some headlight
dimming issues . i have replaced both battery wires and put a new alt and battery and
still at night just rolling up the windows will make the headlights dim a little . i added a
after market stereo system and anytime the bass hits the lights dim really bad it says
that the truck alt is 160 amp do i need to upgrade and get a high output alt or is there
some kind of grounding issues that these trucks are having i also added a second
battery and isolator and 1/0 wiring for both batterys grounds and positives just for the
car audio and still have the same problem i noticed the issue before adding any car
audio can anyone help me that has had the same problem and how to fix it thanks