Ordered Host Mammoth

If I am remembering the camper layout properly, the fresh tank is against the front camper wall and the gray tank is behind it. The false wall at the forward end of the storage compartment is up against the gray tank. The lines you see at the foot of the bed close to the fridge is the fresh water fill and overflow/breather. The kitchen sink has a flex pipe into the basement where it mates with rigid pipe attached to the top right of the storage compartment running the rest of the way to the gray tank. The gray tank drain runs along the left bottom edge of the storage compartment and dumps close to the battery compartment.