I have fitted a reverse camera kit to my 2014 i3 using the kit from Empirical In-Car in the UK, they shipped it to me in the USA. It easy to install, with very responsive help via WhatsApp. Biggest job was removing the rear bumper to drill the hole for the camera. Turned out OK, camera is hidden as well as all other wire and control box and it uses the main screen in the car. Only issue is it clinches every now and again and knocks out the main screen all together, but comes back next time you turn the car on.