this is true?? then only with a battery will work? or i need to change the alternator to? or just leave that how it is??My car lights go down when the sound its high?!?battery isn't the problem. when the engine is running, the alternator supplies electrical power for the vehicle. yours, by the way, isn't putting out enough power. get a larger oneMy car lights go down when the sound its high?!?replacing the battery is the best option. but if your lights are only dipping a little then you cold purchase a capacitor from any car audio retailor. what it does is hen the sub hits and needs more power it takes it from the cap instead of the car and taking to much power.My car lights go down when the sound its high?!?it may be the wiring...
before buying a new battery or alternator, i would check all the wiring.
check grounds, fuses, connections, etc.
its not worth it to find out its not the battery or alternator after paying for it.
good luck
