Plug-and-play. Red and blue changeable LCD display. 4 speedometer includes odometer, trip meter, and clock. 4 tachometer also shows gear position, cruise control, and ABS functions. 2 fuel meter shows percentage of fuel left. 2 volt meter displays 8-16V Dc. H-D models use OEM speed sensor, universal model includes speed sensor, PART #2210-0132, also available separately. Universal gauges include a speed sensor, H-D gauges use OEM sensor. Gauges can also be purchased individually.