I am trying to reconnect everything the PO had disconnected for whatever reason, and I am currently working under the galley sink to reconnect the water and gas lines. I have put the gas lines back, but I am having trouble with the water. My sink fixture is the single handle type, and has two lines coming down from the fixture. Trouble is, I can only find one disconnected water line coming from the trailer plumbing to connect to the sink. It looks like it comes straight from the water tank, so I assume it is for cold. So where is the hot water line? I see the large line coming from the rear of the trailer where the heater is, but there seems to be no line coming off of it. I have looked at the plumbing diagram from a 72 repair manual, but it doesn't help. Any ideas?