On my ‘21 419 I have the grey and black valves in wet bay, I believe for the front bath toilet and shower. Then there is a grey valve under frontish of kitchen slide(kitchen sink) and a black valve back by rear axle for 1/2 bath.
My tank monitors are comical at best with readings changing randomly without usage.
Careful flushing black tank with valve closed. Not sure if rear tank has a flush also, I keep both open just in case.
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2021 Fuzion 419
2022 Chevrolet 3500HD DRW HC Duramax with all the bells and whistles.
Got tired of "fighting stupid" (LEO) after 27 years and retired.
Active MX rider/racer, parent, sponsor, mechanic, transporter, and race fan for my son.
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