Backup valve installs in trailer brake actuators with high psi ratings and wires into your tow vehicle so that the trailer brakes do not activate when you shift your tow vehicle into reverse.

Replaces the bypass solenoid valve included with your Demco model DA10, DA20, or DA91 trailer brake actuator with an electric reverse lockout.

Use this kit to replace the solenoid valve in your Dexter brake actuator (T4839100, T4500600, T4839120, or T4839000). Kit includes solenoid valve, cable ties, and draining tube.