Long press of source/mode button to enter infodapter menu. Aftermarket headunit requires a rear camera input. To retain a factory fitted camera, an additional vehicle specific camera retention harness is also required (if available, sold separately). Please be aware when installing a High Definition Camera, the camera resolution will be reduced using this product. Overview Complete a full aftermarket double din headunit installation in your Audi A4 B8 (2008-2016) or A5 8T (2007-2016) models with CD or Multimedia head units (MMI vehicles), from start to finish with this Aerpro vehicle specific headunit installation kit, containing everything you need for a perfect upgrade in one box. This kit includes: facia kit with built-in adjustable air vents, Button relocation for MMI Vehicles, mounting brackets, infodapter interface, antenna adapter and universal patch lead. To make the installation process even easier, simply add Aerpro APP8 or APP9 aftermarket headunit harness adapters which will connect from the aftermarket headunit directly into the steering wheel control interface harness supplied in this kit.