CAM-AU6-AD Audi Rear Camera Add On Kit for A3 A4 Q2 Factory Head UnitsConnects2 CAM AU6 AD Rear Camera Add On Kit for Audi A3 A4 Q2 Factory Head Units with 5. 8or 7 Screens Fitted The CAM AU6 AD is a full camera add on kit that allows you to add in an aftermarket camera (included) whilst retaining the use of your factory head unit on various Audi models with 5. 8" and 7" displays with Aux input (See Vehicle Applications for specific vehicles). This product is specifically designed for use on vehicles without a factory