stereohead69

ok so i have a 2007 chevy impala with a 270 amp alt a yellow top up front 2 hc2400 kinetiks in the back as well as a hc3800 kinetik in the back as far as batteries so you all know all i am running is a powerbass 3000xa to my powerbass 3xl 12s 2 of them and a phoenix gold ti 500.4 old school amp to my mids and when i turn it up my headlights dim and i dont know why any help would be nice guys thanks.

ok guys i love all the help you are giving me today starts my vacation for christmas so i have alot of free time to try diff things and will keep trying till i find the prob so keep the advice coming guys once again thanks.