I have a UFP actuator for my trailer. I replaced the unit 3 years ago. Last summer the brakes lock up when I go into reverse. I checked the electric going to the reverse solenoid and I have 12 volts there. Somebody recommended adding a ground wire from the solenoid directly to the trailer. I added the ground wire still no luck going into reverse. I do not hear or feel a click on the solenoid when putting the truck in reverse, but I do get voltage. Looking for any suggestions.
Thanks