Solenoid Troubleshooting

You can test a winch solenoid by doing bypass test to determine if the problem lies in the switch or solenoid. Use a lead of 12 gauge wire and jump from the battery +12V and contact the green wire on the solenoid. The winch should operate in one direction. Then apply the +12V wire to the black wire on the solenoid. If the winch does not work in the other direction then the solenoid has a problem.

The direction of the winch movement, whether in or out, depends on which of the two two solenoid contacts is connected to the 12V power source with your lead wire. If the winch moves in only one direction, inspect the connections on that solenoid and ensure they are clear of corrosion and make good contact.

To test the motor, apply the +12V power wire to each of the two terminals on the motor.   The motor should operate in both directions.   If it does operate in both directions then you know the motor is ok and the problem probably lies in the switch or solenoid.