Ryan:

How do you have your amps connected to the main buss?

I suspect you need to wire them directly to the battery cable connection via a relay, and not directly to the "ignition" switch. The MB wiring is not heavy enough to handle that kind of load. Also, the instructions (if any) from the manufacturer of the amps are likely to be mostly useless.

A quick test would be to disconnect the amps, etc and see if the problem still exists. If not, then you know where to start.

You probably only have 60 amps output on the alternaltor -- check this (probably in the onwners manual) -- if you draw more than that with all accessories on (A/C, rear defrost, stereo, etc) you will eventually drain the battery.

I hope you are wearing earplugs when you have the stereo cranked -- if not, start saving up for hearing aid batteries, you will need them shortly! (I wear 30 db down industrial earplugs when I go to dance bars!)

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!