Models Harley-Davidson from 2004 have interface OBD (On-Board-Diagnosis) in the form of connecting to 3 poles. This adapter uses this connection and allows the instruments of motogadget to be detected directly by the controller data of the vehicle. It is therefore not required to install and connect the sensors to the speed and the engine revolutions supplementary. The m-CAN is composed only of a tiny box completely sealed, an OBD connector and a cable long enough. Resists vibration and bad weather and is protected against voltage peaks. Its functionality is guaranteed up to below 5V voltage.