Tekonsha Prodigy Brake Control for Ford Vehicles (1994 and up) Includes universal wiring harness to connect brake controller to vehicle tow package. Applies power to the trailer brakes in proportion to vehicle's deceleration. No level adjustment necessary - it adjusts itself to varying terrain as you drive. The only inertial control that works proportionally in reverse - great for backing into tough spots. Digital display depicts voltage delivery to trailer during braking.