Audi A3 A4 A6 A8 TT Amplified Active ISO Radio / Stereo Harness / Adapter / Wiring ConnectorDescription: 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 head unit harness adaptor which comes with your aftermarket stereo. This Radio ISO Harness will convert yourAudi Porsche original radio harness adaptor to standard ISO connections. This harness is for vehicles with an Active System only. Connects with the active