Audi A2, A3, A4, A6, A8, TT BOSE Amplified Car ISO Wiring Harness Adaptor Loom Fits: Audi A2 : 2000 - 2005, Audi A3 : 1996 - 2007, Audi A4 : 1995 - 2004, Audi A6 : 1994 - 2003, Audi A8 : 1995 - 2003, Audi TT : 1998 - 2006, Note: ISO vehicles with Bose system Plug & Play Installation INCLUDES: BOSE Wiring Harness Adaptor Lead Important: Black wire must be connected to Ground. Blue wire must be connected to radio remote out separately if not so in radio ISO connector.