Old Part # 81103
Reverse Lock Out Solenoid
Unlike drum brakes, disc brakes generate full braking power in reverse. A reverse lockout solenoid should be installed at the actuator before installation of disc brakes.
12 volt solenoid valve connects to the tow vehicles back up light circuit for automatic brake lockout. Unit can be wired independently or adapted to trailer wire harness with a 5-flat plug on trailer and tow vehicle.
Thread Size: 3/16″ IF x 1/8″ MP