I am trying to not only locate the water pump on this travel trailer but the switch as well. We purchased from a gentleman from Wisconsin. Never had it out, but are planning a trip in couple weeks. Husband filled the fresh water supply tank and tried to find the switch to turn on. We think the water pump is missing altogether as the switch he found that goes to the 12 volt battery has been unhooked to whatever it was hooked up to. So, couldn't find another switch, nor the location of the water pump. Can someone please assist? Thanks so much.