Re: 1989 Camaro - Voltage Gauge
The whole instrument cluster presses into a circuit board of sort. If the guage is not working right, it may be the actual guage itself, or it may be somewhere beyond the circuit board. I call it a circuit board, but really it is more like a flat plastic sheath that has a bunch of thin copper pieces that mate with the back of the instrument cluster when you fit it in (kind of like how a car stereo detachable face plate mates to the stereo body). Unfortunately, I don't know where the wires go from this 'circuit board'. I am wondering if perhaps some of the other guages also malfunction when the volt meter acts up. When it goes wanky, does the oil pressure, temp guage, and fuel guage read false too? If so, this happened to me last month, and it turned out to be a fusible link that was operating only intermittently. Now, I don't know where this link is, I had a wiring guru at the speed shop trace the wires so I didn't have to risk an aneurism doing it myself, heh. It only ran me $80 all tolled, so it was well worth the trip to the pros.