I did buy a new voltage regulator this morning. The one on the car tested bad. I checked the board with the meter and it checked out good. When I had the origional cluster in the car eveadently one of the post that the alternator gauge wires hook to was loose and it burned up the gauge. Smoke poured out and I shut the car down. Since then the cluster was replaced and all of the wiring is nearly new from year one. I looked behind the dash to make sure nothing was burned up but found nothing. I agree with the ground issue I just don't know where to look. I grounded the battery to the body. the cluster to the frame, the motor to the body, and of course the neg. battery cable to the motor. Almost forgot, all gauges did work correctly before the ALT gauge shorted out. When I got the new cluster and installed it, I noticed the ALT gauge worked and the fuel and Temp went all the way to full and Hot and that brings me up to where I am now.