I upgraded my monitor system to a See Level II setup. It uses a sensor that attaches to the outside of the tank using a strip of material. These are all connected with one wire, from the fresh water tank to the gray tank to the black tank and then to the monitor. It uses percentage for info so it is much more accurate. It also has a place for the water heater and water pump switches, making for a nice compact package that was easy to mount. Still, after almost 10 years of living in my Lazy Daze, I have learned when things need to be looked at from having done it so many times.