New year and new problem too.
I noticed my voltmeter started acting strange: It does read the voltage but the needle bounces back and forth untill it finally settles. It is a very fast motion but noticeable to the eye.
This happens when I turn the key to position II, just to provide electricity to the dash, and also when I raise the lights. It seems that turning on or off systems that cause sudden changes of current (voltage droping or raising) produces this effect: the needle doesn't raise or drop smoothly, instead it "jumps" and keeps rocking untill it stops.
I haven't tested with the multimeter yet but it doesn't seem to me that the actual current on the car is displaying these "surges" as all the lights and electrics apparently are working just fine!
So, what could be causing this? The voltmeter itself is damaged? Is there any component besides the voltmeter that could be faulty (I seem to remember there is a resistance on the back plate)?
Perhaps I should just take the set of gauges out and test the voltmeter on a power source?
Any thoughts would be appreciated!
This car was a mistake 
