I also got tired of having to squat down and try to see the fresh water tank overflow hoses, to avoid starting the siphon. I used pex fittings to combine both into ine run of tubing, routing it to just below the FW fill, where I installed another brass quarter turn valve. Now its easy to know when full, and shut the valve, drive to sute, and open the valve back up once a little water has been used.
I carry pex fittings, crimp tool and some tubing on board.
"I might be movin' to Montana soon..."
2013 Eagle 29.5RKS
2013 Ford 6.7L diesel F350