Quote Originally Posted by TSiFTW
I know what big 3 is. It all goes hand in hand though. If the system is working correctly in the first place then even with a 50-60 amp draw from an aftermarket stereo system the big 3 alone will do ALMOST nothing. Notice I didn't say it will do nothing. What it will do is allow more current which in turn will just put more strain on a stock battery and alternator. You WILL eventually wear out a stock alternator. A deep cycle battery will hold a charge better therefore put less strain on the alternator when the stereo system is drawing more than the alternator can put out.
You are wrong though. The Big 3 will make your entire charging system more efficient.

You dont put more strain on anything by making the charging the system more efficient. If anything you will take strain off the alternator by lowering internal resistance.