I have a 2011 315RE Fifth Wheel - I see in the monitor panel there is a switch for the monitor for the #1 and #2 Black tanks. I only have 1 dump valve for black and the monitors shows Black # 2 is 3/4 full all the time. Does anyone know if there is 2 black water holding tanks ? Should there be a 2nd Dump valve ? or does the panel have an empty spot that indicates 3/4 full all the time ?
Hey don't feel bad I posted a similar question last year. Mine has two black tank switches also. You should only have one black tank. I was told that they use this panel for multiple campers and some of the bigger units have two black tanks. So there you go.