Without upgrading anything with the MC electrical system, does anyone know what the largest current draw that can be used for an aftermarket sound system is? Mine is a 2002 MC which I am told has a 120A alternator. I would like to put in a JL Audio XD600/6 (600 watts class D full range with 50A fuse, no maximum current draw mentioned in the manual) and a JBL MS-8 (25A fuse, but I think most of that is for the internal amplifier which I won't be using). It looks like several people have put in larger setups, although I would like to be cautious as to make sure not to reduce the life of the alternator with excessive current draw.

 

You should be fine. I have 2000 watts RMS and it is fine. I do have a 5 farad cap. If you are worried about it just use a cap.

 

That doesn't seem like that much of a serious draw, I remeber somewhere that it takes a 120% of the alternators output to start causing damage. I imagine they made the alt for 120 but the max the car could consume with every option on is probably only 75% of it's max.