I had an Autometer Monster tach in the race car, bought it about two years before the car was completed, after about two months of racing it started acting up, not reading correctly and generally erratic. I contacted Autometer, told them the situation and they asked me to send it back to them. They fixed it and sent it back to me free of charge. They are A OK in my book.
my experiences were quite the opposite several year back with their top of the line computerized gauge set up. We could not get the speedo to calibrate and hold it. I probably lost over 40 + hours on that issue alone. I even had a scope on it tried both sine and square wave generators, used shielded wire for the signals, ran the separate from other harnesses. They kept sending me modules and speedometers;. I asked to speak with the engineer that designed it and was told they hire consultants so it wasn't possible. Out of frustration, we did what one is not supposed to do which is change more than one thing at a time, ( In this case it was 3). It started working and I had no desire to go back and try to figure out which of the 3 did the trick.
i still have a box full of modules and speedos
