CAN-Bus Kit for Audi, VW, Seat, and Skoda with 40 Pin Quadlock - Power + Speaker (ISO) + DIN Antenna Connection. When replacing the factory-installed OEM radio in a vehicle controlled by CAN Bus with an aftermarket radio, a specific CAN Bus adapter is required. Both specific and universal CAN Bus adapters convert relevant digital data from the vehicle-specific data bus into analog signals. Depending on the adapter, various signals or comfort functions such as ignition power, lighting, reverse signal, or speed signal are read and provided in analog form for different aftermarket solutions. Our support team is happy to assist with selection. Note: CAN Bus connection: 40 Pin Quadlock, Connection: Fakra / Fakra Phantom Power / DIN, Outputs: 1A max.