Data Bus Breakout InterfaceAllows simple installation of an aftermarket speedometer and or tachometer. Plugs directly into motorcycle's diagnostic port. Connects to bike's data bus and outputs traditional analog signals. Features outputs for speedometer signal (8000 ppm), tachometer signal (adjustable for 1 , 2 or 4 cylinder), check engine signal, accessory power and ground. Digital readout works like a scan tool; allows reading back and clearing diagnostic codes.