There you go!

I found out the hard way years ago that you can't ecsape the lack of a high output alternator with a big stereo. Things like backup batteries and capacitors help to soften the blow to the charging system, but they're just bandaids on a bleeding artery.

There's a little math involved in figuring exactly out how much juice you actually need, but I figured out years ago that a 1600 watt stereo (what I had in my car) needs ~120 amps of current at 14 volts to play at full tilt. Normal listening was at half volume so the draw would have been around 60-80 amps. Running the car takes about 50-60 amps without the heater/AC, lamps and stereo. Our alternators put out 85 amps IIRC.

Quickie math!
85 amps output
- 50 amps running power
- 80 amps stereo draw
-45 amps excess draw

Your system may not be that big, but you get the idea.

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!