Black tank vent location.

[coffeediver]

On my 2010 Big Country I am trying to locate the black tank vent. There are 2 vents on the door side and one on the opposite side. The 2 on the door side, one is above the kitchen and the other is over the w/d location. The one on the other side is in basically above the bathroom but on the other side of the trailer. I am assuming this one is for the black tank but I don't want to assume. I have not been able to find a diagram that shows the vent locations.

Anyone have any idea?

Barry

 

[david-steph2018]

Can you take down the basement wall and see the toilet?
If so, then you should be able to find the black tank vent and see which side it goes to the roof.

 

[NYSUPstater]

Go on the roof and have someone flush the toilet and listen by each vent cap. Wouldn't suggest doing the sniff test for this. LOL