This is just helpful advice, but please take a look at other possible options, since I am not an expert. :) Google search is your friend, the right tools, and patience will help.
I used this YouTube video to help me:
Yours might be different, since there has been documented changes in design...
Mounted the camera higher and the view is very helpful. This view is ideal for seeing motorcycles splitting lanes (California) and seeing them better now to safely move over to give them more room. This rear view camera/display functionality should be from factory. My Corvette has it on the mid...