ACV can bus adap. VW ( med mute ) CAN-BUS Interface for OEM handsfree set Connect any aftermarket head unit to Seat / Skoda / VW with factory installed handsfree phone kit. Read out telephone mute signal, speed pulse, ignition, illumination and reverse gear and telephone signal input for Becker head units. Seat Altea / Leon / Ibiza Skoda Octavia II 2005-& VW Passat 2005-&