Kenworth Tachometer Not Working. I found this on google but its not working correctly. I have a

I found this on google but its not working correctly. I have a 2006. I took it for a ride today and I noticed the speedometer wasn't working, than I found out my cruise wasn't 2007 Kenworth W900 Dash Gauges and Speedometer Not Working W900 dash gauges often fail due to wiring issues or faulty instrument cluster connections. It helps you keep track of your engine's speed and ensures that your car runs smoothly and efficiently. Customer: Gauges not functioning on Kenworth T800. Kenworth W900 Tachometer Not Working: Testing Gauge and Sensor W900 tachometers often fail due to faulty sensors or wiring ground issues causing inaccurate readings. The speedometer is not the original as the manufacturing date says 2001. Only speedometer and tachometer working and lit. The volt meter, oil temperature and coolant temperature gauges in the cluster to the left of the tach stopped working all of a sudden. Verify harness voltage: one prong should have ~13. 47x4ob
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