I would like to add, for those who don't like adding any new holes to their vehicle, that there is a backup camera that is a straight swap for one of your license plate lights.
The exact camera I used was this one (there are several similar ones)
https://www.amazon.com/gp/product/B00J1J9KGG/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Also worth nothing that I did a "clean" install through my liftgate and needed an extra rca cable. The red line that runs through it is for a trigger wire which I connected at my taillight so that I did not need to tap any factory wires under the dash for a reverse signal.
https://www.amazon.com/gp/product/B010M1I5US/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
How was the quality of this camera? Is the license plate light bulb the same type as the original bulb? Is the camera fixed or adjustable?
I am using the license plate frame camera at the moment which shows very well and it is adjustable. Thinking of possibly upgrading as this seems it would make it look more factory.