Review on 12V DC Electric Trailer Jack - 2000Lb Lift Capacity With Hard-Wire Connection by Sean Moran

I put 4 of these on an old cab over camper when the hydraulic jacks met their end of life. 10 months and one winter later, two of the four would not work. When I attempted to operate them manually, they would not move. After opening up the cover, I found water had gotten past improperly sealed switches and into the motors which were also not sealed properly. After cleaning up the rusted motors, one of them is operating correctly. The other will only retract which means the switch most likely is bad. If you buy these, cover them with a weather proof cover.