Cable to convert some Vauxhall: Volkswagen: Seat and Skoda cars with Quadlock connectors to a European car radio with ISO connectors.This lead has a built in CAN-bus Interface that will generate a 12V key in ignition power supply to the radio and also provides a CAN generated speed pulse signal for use when installing a navigation head unit.This is a plug and play solution for cars without steering controls. For Full CAN interface solution with steering controls use another part number.