JEGS Reverse Lock Out Module prevents miss-shifts, eliminates the need for toggle switches and the resulting grinds when shifting into reverse, and is specifically designed to unlock reverse when your vehicle is at low speeds. Simple to install with pre-labeled wiring; just 2 wires to the speed sensor, 2 to the solenoid, then the hot & ground. Better than hooking up the solenoid to the brake pedal or just fighting the spring into gear; easily wire to a Tremec Magnum, TR-6060 or T-56 6-Speed transmission.