Tank flush

[Robkiller]

I have a new to me Volante Fifth Wheel Series M-270 2019. It has a tank flush in the back just one. However i have 2 black water tanks. A front toilet and a back. Will this flush both tanks or just one?

[harley]

Look under the sink in each washroom, if there is a black 90 deg thing that is hooked to 2 hoses then that tank has a flush. I cannot see one flush inlet doing both. There must be another hose fitting somewhere.

[Robkiller]

So i could not see one in the sink that i know has one. But in the one in question i saw this and i think its what you are talking about. Please see attached.

[Robkiller]

Found it! They put it at the worst spot.... my eye level. Lol

Thanks!