Quote: Originally Posted by LittleDragon
just relay it with the ignition and setup a UPS. When you turn off the key, it'll cut power to pin 8 which makes windows think the UPS lost power and proceeds to shut down.
Ok, I thought you may have meant through a relay, that's how mine works....but Windows won't let you put both the USP service and another program (GPS) on the same com port.