ISO- speaker output on active systems with Mini- ISO connection(yellow 6-pole or black 20-pin plug).Audi A3Audi A4Audi A6Audi A8Audi TTSeat - all models mit 20pin Mini-ISOSkoda - all models mit 20pin Mini-ISOVW Golf IIIVW Golf IVVW VentoVW PassatFor partially and full active systems(Inte kompatibel med BOSE sound system)