To make the needle stable for the high vibrations, a stepper motor is used. With the auto-scan function, the meter will scan when the engine is turned on. This Speedometer with illuminated needle is very easy to read at night. The odometer and trip meter on the digital screen give the precise mileage. This instrument will work with the OEM speed sensor. A matching tachometer (with integrated oil pressure indicator) is available and both gauges will fit the optional bullet housing or the optional one bolt mounting bracket (27-5773).