Common three quarter ton pickup truck models are the Chevrolet 2500, Dodge 2500, Ford F-250, and GMC 2500. Regulator Gas controls for your appliances. Sway Fishtailing action of the trailer caused by external forces that set the trailer's mass into a lateral (side-to-side) motion. Brake Actuator, device mounted under the dash of a tow vehicle to control the braking of the trailer. Hitch Receiver Where you connect your RV to your tow vehicle. High Profile A fifth-wheel trailer with a higher-than-normal front to allow more than 6 feet of standing room inside the raised area. A good sense of humor while being very professional. Equalizing Hitch A hitch that distributes some of the weight across your trailer as well as your towing vehicle, usually 10 to 15 percent.