Jimmi, I did the same thing, installed it than realized I didn't have the gauge grounded. The gauge worked for a week, than stopped. Whats really confusing me is how I can be showing 12v before the runtz, but be showing 0v right after it. I would suspect a bad runtz, but I had a resistor that was doing the same thing, and I got rid of it thinking it was bad.
If I just run 12v to the runtz without the gauge connected to it, it gives me ~6v output.
