alternator problem...maybe????

everytime i step on da brakes or close my moonroof or my window…the light on my dash and headlight goes dim…not dim enough to go away. just noticable to see it go dim. let me know if anyone has this type of problem…the car is all stock …no system no aftermarket parts…

loose or dirty battery terminals maybe, bad ground.

get a volt meter and see if your getting 14.5 volts at the battery with the car running.