I installed my SaniCon a little differently. I direct connected the SaniCon to the bayonet fitting. I didn't want the to waste 2' of SaniCon hose, by having it come out toward the front of the coach, go behind the drain and then out the cut away in the door frame. I added a pvc pipe to the SaniCon, ran it under the SaniCon and connected the hose to the end of the pvc pipe, just before the door frame cut out.
I disliked chasing the hose to get it to drain, so I added a 6" pvc riser to the pvc pipe. Now, once my tanks are empty, I uncap the riser, which releases the suction and lets the hose drain.
Yes, you need to recap the riser or you get a little volcano.
Don & Mary
2019 Newmar Dutch Star 4018
2016 GMC Canyon 4WD Crew Cab