I want to add a back up camera to my 2015 C300

What is your question?

I have a 2015 Mercedes Benz C300 without a backup camera. It does have the screen and navigation but I want to know if I purchase the Crux CMB-17C Trunk Handle Camera For 2015 - Up Mercedes Benz C300 Vehicles If that can hook up to the screen that is already in the vehicle or if I need to purchase something else?