If it is clicking it may not be the solenoid. Remove the cover and tap lightly on each one while trying to operate the winch. Recently mine had a similar problem. It would click when I tried to engage the motor. I took the motor a part and a brush was hung in it's holder. It appeared I had gotten water in the motor at some point in time. I took it to my local generator shop and they cleaned, lubed it and re-insulated it. I put it back together and works fine now.