I did all the work myself but not all at the same time, I work on one thing until it is finished then I go to the next mod. Yes the stock camera was too low for me I wanted to see what the mirror don't show you plus I can drive forward backward any direction with camera on, I installed an on and off button. I had a 7" screen for about a year and one of the inputs went out so I got the 9.4" screen, I needed 2 inputs one for the camera and one for the DVD.