I bought a wideband monitor with the gauge from Innovate motorsports and installed it according to the instructions but still doesn't read properly. It reads 16-17 until motor gets hot then only drops to about 15.4 and is not switching it holds this number. I tried swapping the monitior wires around and got the same thing until I touched the bare wire and my handle grip and then it started working switching 12-12.5 if I let go of the handle grip it quits working again, if I touch anything metal on the bike it drops to 7.5-8. All grounds are at the motor. Any suggestions?