Thinking of putting in larger fresh water tank

The hose from the fill spot to the tank... If you have the type of hose with ridges, it can be a hassle to get a water tight connection. Not a matter of strength with the hose clamp but angle of hose to the connection at the tank.

The wiring...Be sure you know which wire goes at what level. So when you re-install the probes the sensors are at right level so you get correct reading on water level.

Don't toss old tank... might come in handy in back of pick up for longer boondocking trips?