El Camino hit on the key to my dilema, his explanation is the closest I can find to describing my problem.
I have a M2-ATX white wire sensing line tapped into the ACC line in my stereo harness. Everything went well during tests while the key was in "ACC" mode, however I started the car from the "ACC" position to "Ignition" and the pc crashed. I was able to use the recovery console in XP to fix the MBR and CHKDSK, but I don't want to do that again...
It has to have something to do with the short "disconnect" mentioned by El Camino and the voltage spike.
Additionally, I don't understand why it didn't go into the 5 second shutdown sequence since it is set in P1 mode (5 second start up and shutdown, the suggested setting).
Does anybody have any ideas? Suggestions? Wiring changes ro "P" setting changes?
I could go with the rocker switch method, but I prefer to keep it tied to the key...
Syrinx, FLW, MO