Real quick question... Can I just use a ring tongue connector connected to a screw on the mobo wired to the chassis of the car for a ground? The computer runs fine with the mobo not even grounded right now...that is other than the psu going into a grounded inverter. Is that enough or should I do the above? I haven't routed sound to the stereo yet and am wondering if I should do this to prevent some type of noise?
If you get noise, ground it. If you don't have any noise when you hook it up, don't worry about it ;)