My 87 Jimmy has a volt guage in it that I think is Fubar. It reads way low! I've put a tester on the batter to see what the alternater is putting out and it puts out a steady 14 to 14.5 volts but the guage will only read 9 to 12. The more acessories(lights, heater, blinker etc.) that I put on, the guage will read lower. But with the acessories on the guage on the battery still reads 14 volts. I'm just wondering if anyone else has this problem or anything like it. I know it is a very cheap factory electric guage (that aren't known for their accuracy) but I don't like how it moves like you think it would but just really low. Any help is apreciated.