I just got a 99 escort, its already got an aftermarket pioneer cd player, rockford fosgate speakers in the doors, and 6x9s in the back, when i turn it up the light on the cd players starts to dim when the bass hits, i want to install a subwoofer in there most likely a AA Havoc, so what do i gotta do so the car doesn't die cause is already dimmin without any sub or amp in it so yeah help.