Zybane, thank you sooooo very much for the attachments!! I am not a tech savvy person, would you mind explaining how easy, or difficult, both devices are to install, connect and set up? What is an OBD-II port? How are they powered and is the cord with the camera long enough to reach the rear of the truck? I would like to aim it inside the truck bed from a place near the tailgate. See attached pic of my crates. Can I simultaneously use two cameras, one as an actual dash cam and one for the dogs? I am extremely interested in both devices and appreciate your assistance.