The dodge speedometer is off due to the over-sized tires and the odometer does not work. As a bonus the lighting is so dim I can't even see my gauges at night time. I picked up another SpeedHut gps speedometer/odometer. I installed my new unit over the old one. I modified an old light base (Ive been meaning to throw away) to work as a bezel. I also moved my cheesy pyro/boost guage.