I got a vti cluster ukdm with 150 mph and 9500 redline, Got it all wired up to work corectly. The tach was working yesterday, now today its stuck in one spot. I've trouble shooted its geting power, ground and signal. Its like the tach itself is messed up. basically stuck at about 2500 rpm, moves very little from there. Is there any way i can fix the tach where it works properly again? any writeups or anything out there i searched didn't find none. Thanks