Description: ThisAudi/Porsche Radio ISO Harness will allow the installation of a new or used aftermarket stereo into yourAudi/PorscheVehicle. You will also require the new or used aftermarket headunit harness adaptor which comes with your aftermarket stereo. This Radio ISO Harness will convert yourAudi/Porscheoriginal radio harness adaptor to standard ISO connections. This harness is for vehicles with an Active System only. Connects with the active Audi/Porsche (subwoofer and rear sound system) with Bose Audio System, DSP, models until 2004 (excluding installation type with Fakra connection) Vehicle fitment:(guideline only) Audi A2 1998> Audi A3 1998> Audi A4 1998> Audi A6 1998> Audi A8 1998> Audi TT 1998> Porsche 996 Boxter.