Welcome Aboard, Holly!
I replied to your q in the "other" forum, as well, but for what it's woth, any RV water pump that I've ever seen is mounted at or below the bottom of the fresh water tank, and withing 2 feet of the tank. I haven't seen 'em all, thankfully, but I've never seen one set-up differently. Find the water tank, and the pump should be in the immediate viscinity....
2014 RAM 2500 Laramie 4x4 Quad Cab w/Cummins Turbo Diesel, 2009 Rockwood 2607, and 3 'yaks!
300W of Suntech Solar, a Rogue MPT-3024 Controller, and a Xantrex PW2000 Inverter