Ensure your trailer is Ready for the Road Ahead with parallel brake force to your vehicle, with the Tekonsha Prodigy Trailer Proportional Brake Control. By gathering the travel speed of the truck and trailer, this replacement controller works to slow down the trailer at a pace on par with the vehicle it is being towed by. Built with a digital display to depict how much voltage is being delivered to a trailer's brake drum when towing or parking. FleetPride is your First Click in Heavy Duty .