If your system is like mine there are 4 different screen inputs. Left side camera, Right side camera, Rear camera and Alladin Jr. system. The screen controls will allow you to look at any input either "plain" or "reverse" (my desciption) Bring up your Alladin screen using screen controls, input 4 on mine, then use the screen controls to make it look right.
You can adjust the cameras to look like you want them to also, either like you were looking in a mirror or like you had turned around to look at something.
Remember if you want to do something on the Alladin screen, not the way it looks, but the numbers and stuff on the screen, you have to use the Alladin control. If you want to do something to how the screen looks, use the screen controls. It takes a little use before it comes naturally which set of controls to use to get what you want.
Ken