Connects 2 Aux Input to OEM Adapter Interface for VW Passat/Golf/Touareg/Touran/Transporter with Delphi, Blaupunkt, Delta 6 Double Din,RCD200,RCD300,RCD500 head units. This Aux Adaptor Interface is compatible with following car models: VW Eos : 2006 Onwards VW Golf MK5 :2003 Onwards VW Passat : 2003 Onwards VW Polo : 2004 Onwards VW Jetta : 2006 Onwards VW Touareg : 2002 Onwards VW Touran : 2002 Onwards VW Transporter T5 : 2002 OnwardsThis auxiliary input interface connect to original head units via the CD changer port and trick the unit into believing it is playing a CD changer, whilst really playing the audio from another sources. This means the audio can be produced at a much higher quality.