In this video I install a rear view mirror style dashcam with both a front facing camera in the mirror and a second camera facing to the rear that I use for my 5th wheel hitch. it's a great alternative to the factory CHMSL (Center high mount stop light) camera that some trucks have. The video is longer and slower but is detailed so that you can follow it do do your own install.

The trim kit I used: https://amzn.to/3t2BO28

The new version of the mirror I used: https://amzn.to/3mkknrF