With this Grain Trailer Camera/Monitor (called the Camera Arm), one is able to see the loading process and thus move the semi forward as needed-without having to leave the cab or climb the trailer's ladder. An all-wireless system, it includes two cameras, two camera arms, and a 7-inch monitor with single-, split-, and quad-view capability (e.g., for grain-filling, backing up, and air gauges monitoring). The trailer-mounted camera arms automatically rise and lower as the tarp is rolled open and closed.