Complete kit for retrofitting and activating the AUX input Compatible with the following radio navigation devices: Code 510 Audio 20 CD with 6 CD changer Code 516 Audio 5 USB Code 520 Audio 20 CD with 6 CD changer Code 523 Audio 20 CD Scope of delivery: AUX IN adapter Coding dongle Note: Not suitable for vehicles with factory AV input (multimedia interface) Code 518 Not suitable for Code 505 Radio 20 NTG 5