2015 340x12 XLR Thunderbolt. aux. gas tanks, need to switch the wires on the fuel gage switch, gen. side reads on pump side, pump side reads on gen. side. Check valve for Black water tank keeps sticking, keeps sticking because the hoses are connected in the wrong direction, in coming water connected to out going flow side of valve. Really, slow down a little and connect things right.
2012 HD 2500 DuraMax
2015 XLR ThunderBolt 340x12hp