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Hi my name is Robert...
Sounds like you have a bad motor solenoid, if the contacts were stuck then the pump would continue to run, the solenoid is near the pump/motor, try smacking it a few times and see if it will unseat. Will have a cable going from the solenoid to the motor. Who is the manufacturer of the leveling????
Let me see if I can pull up a diagram on this, will take me a few mins will respond back... Robert
I really think you have a bad solenoid, the solenoid should only have voltage on one side until you hit the switch, then power will be across the solenoid. Make sure all the cables are clean and tight in that area. I think I found your system and if you click HERE it will provide you some wiring diagrams. I am not so sure the other issue is tied together with this as the jacks should be on there own circuit. I might try another solenoid, most RV shops should be able to obtain one for you, if the problem still occurs then I might have a shop diagnose, it should not take more then one hour..... Hope this points you in the right direction. IF you have more questions or concerns please feel free to contact me. IF you are satisfied with my efforts please feel free to select a rating at the top of the page.,..
Also on that solenoid if you remove it and have continuity through the large posts then it is bad.