Last night on the way home the volt gauge in my 96 suddenly dropped from the mid position to approx the 9-10 range. There doesn't seem to be any loss of battery as all the lights and heater were working just fine. Never lost power. After getting home I let the car sit for a bit and restarted it and it fired up just fine first try. The only variable I know changed on the car is that I added a set of fog lamps 3 days ago. Followed all install instructions. Proper grounds and an inline fuse. The fogs were not on when the volt gauge dropped. Any suggestions on this one? False reading from the gauge perhaps? Bad ground someplace else?