to the car when my system's turned up?? i'm scared to mess with anything like that in my Z 'cause i've already had to replace the alternator once, and gone through 3 batteries as well. when i turn the system up at night, the lights get very dim when it thumps and it isn't revved high or at idle. i had thought of installing another battery in the back, but from what i read our alternators may have a hard time charging them both. and i don't wanna fork out another $200 for the alternator again...
