The previous owner of my coach had modified/changed how the pump was plumbed in. They added a couple lengths of hose and mounted the pump up high in the compartment to free up floor space.
The extra hose makes it easy to change, which I had to do a few years back, but also makes it easy to disconnect the hoses to winterize the pump.
You can go to a Lowes or Home Depot and buy the fittings and hose. Cost a little up front but worth in the long haul
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi