Yesterday I had my plumbing panel completely removed in order to replace the toilet flange and 3 inch abs plumbing line going down into the black tank as I had to redo the bathroom floor and toilet due to an old leaky floor seal that trashed the bathroom floor. Anyways, while inside the bay I noticed both the hot and cold water drain lines do not feed to outside of the coach, but are just open ended inside of the plumbing bay....I further realized the problem as my father put the nobs back in the wrong direction when putting the panel back in and upon turn the water back on I suddenly had a flood of water coming from underneath the coach...these drain lines drained to the floor of the plumbing bay....anyways my question is , are these lines supposed to be draining outside of the coach or to some piece of plumbing that gets the water outside the coach and not just into the plumbing bay?