I have a 03 legacy L. My alternator isn't strong enough to power my Sound system. I have a couple options to help but I'm not sure what to do and what order so I can fix the problem while spending the least amount of money.
1.Big 3
2.HID lights
3.Swapping a alternator with a newer or larger sized on from a wrx or legacy gt
4.New alternator
I'm running a 12" sub with a 1000 watt amp (Sony xplod) and 2 kickers components with a 500 watt (lightning audio)
Could another option be buying a new 4 channel amp?