The instrument cluster is a panel that houses all of the vehicle's gauges. This may include the speedometer and odometer, tachometer, fuel level, temperature, oil pressure, gauges and more. Sensors around your car gather data and send it to your car's computer. The vehicle's wiring harness connects the computer to your instrument cluster gauges. Gauges on the instrument cluster can fail because of a bad battery cable connection or high voltage spikes. If you notice that your instrument cluster is not displaying information correctly, you may also want to check the wires connecting the cluster to the car's computer or the computer itself. For instrument clusters, sensors, and other car parts, visit O'Reilly Auto Parts for all of your car, truck, and SUV needs.