Hi all. I've just had to do a refit on my van mounted system. I've moved my pump, disconnected it from the flow controller and re-connected it at the other end of the van, but I've done it tired and a little confused. I've connected the top two wires from the pump to the flow controller, but I haven't connected the bottom two, which (forgive my lack of terminology) presumably control something that would shut off the pump when the pressure backs up. So, without those two wires being connected to anything, it would appear that the pump will run and run, and if my pole hose tap is switched off, presumably this will blow the connectors off. So, how do I connect the bottom part of the pump to some sort of power source? I've attached a pic that will hopefully provide more details. Thanks in advance.