I bought a used dump trailer last month. I have been running into quite a few things wrong with it. Chasing down wire after wire. I am now on my remote. For some reason this guy wired up a solenoid onto the pump and remote. So that after you have the bed up, if you push the button to go down the pump runs and forces it down. This creates some problems. one the pump is running so its eating up more batter. And two since its running, if you have weight it while going back down it jerks a LOT. Every dump i have ever used did not run the motor while going down. I think it is supposed open a valve and the weight of the bed brings it back down. But this one just runs. How do i rewire it so that it will work the way it is supposed to? Also, does anyone know if i can just run a 12v wire from my trailer plug to my battery to charge it? Its on a 03 7.3L f350.