We have a 2000 Beaver Patriot Ticonderoga, 3126b caterpillar 330 . My gauge has stopped working, I’ve had a Fleet mobile company come out to me and they have checked everything from the ECM to the gauge itself . It’s been determined that the gauge is bad . If anyone could please help me with finding a working gauge, weather it’s a used one or new . It’s very important to have a working RPM gauge . Thanks for your help.