@16:45 you don’t connect the red wire to power. It’s already getting power to the rear camera from the cable that goes to the mirror. That red wire is to hook into your reverse lights to have it automatically switch into reverse mode and show the back camera with some parking guide overlays when you put the car in reverse gear.
Had one similar to this a few years ago, problem is after a short time the heat in the summer sun shining on it and temperature in the car killed it after 2 years, ideally better to remove from the car Everytime it's hot outside, but that's a lot of hassle.
