Thank you for reply, I believe you are right, someone on the IRV2 forum has the same RV and the same problem, he may send some pictures to help , I will update here also. For the wet bay panel , I am taking that off anyway, I took it off before so I am familiar with that area but now I am changing all the connections, new pump and adding accumulater. This is the reason why I am trying to fix the grey tank problem, I want to get done with wet bay issues once!
Originally Posted by CC38EL
The tanks will be close to where they drain. Unfortunately, in a wet panel area, it most likely will be behind the panel you look at when you open the wet area.
They literally build the RV around those tanks, drill holes in floors, route pipes to the tanks, seal them and then lay the floor down.
You might be lucky enough to see inside by pulling an access panel to the back part of your shower. I'm not totally familiar with your specific coach, but the pictures of it I've looked at would put your tanks under the shower area.