ok i have a brand new battery and an alternator thats 2 months old.. i watch my cars voltage go down slowly until the whole car dies. I had autozone test the alternator and it was fine..i read on here that it might have something to do with my fan switch being bad wich it is but it has always been bad the fan is on when the car is on no matter what so ithe switch isn't even hooked to the fan. anyways. also my gauge lights have a dead short but they have been like that without the fuse in all winter..i have glow gauges so it doesn't matter. it has a cd player a dvd player and amp and subs but they have been it for about a year now also..with no problems.. i'm just confused as to what it could be if its not the battery or the alternator...nothing is on at all times its all off when the car is off.. so is there any one with any ideas?? cuz i'm out of them.. could it be the cable from the alternator?? if so man is there any way to bypass it and go strait to the battery man i dunno i'm just freaking out about this whole thing.. let me know guys thanks

 

Third gen circuitry doesn't like additional resistance- they usually have a hard enough time maintaining itself. Disconnect all the stereo stuff- not just off- and see where that gets ya. If you aren't blowing any fuses you may end up having to buy a 140A alternator like I did (I think stock is 95A or so.)