So I have a few bulbs burned out on my cluster and thought that I could replace them myself. I soon found out that the bulbs are soldered in and decided that I can live with it for now. However, I took the needles off to get to the bulbs, and thought I got the needles back to their original positions. The tach is now way off (highway speeds it sits a 0 RPM), the voltage looks to be registering too high, and the speedo seems to be accurate, but when the truck is not moving, it seems to rest at about 4 mph, and I don't remember it doing that before. Any suggestions on how I can "calibrate" my gauges without taking it to the dealership and getting violated? Not really a big deal, but mor annoying because everything was working perfectly and then I had to "fix" it and did the exact opposite!!