after the ill fated bios experiment, I had to redeem myself somehow. My carputer has been a PIA but it's worked well enough fpr me to see no further need for the stock head unit, a stock Chrysler infinity 10 speaker sound system. I ripped the head unit open and there it was- a little 5 pin connector labeled RR LR GND RF LF. I figured assuming these were the 4 channels going into the output stage of the head unit was a good idea so I whipped up a cable and the dam thing works great! I cranked up "The Dead Kennedy's" and it kicks the *** out of my cassette adapter as far as sound quality goes. The power switch on the head unit is the only thing that works now. This should hold me for a while until I get some serious amps and speakers.