Please help. I just got a 1999 Tahoe deck boat and I dont know how the water system works for the aft shower or the sink. I have no owners manuel and dont know where the fresh water goes when it is put in the side of the boat or how to use the shower or sink fauset. Also, if water is put in the boat for the sink and shower, how is it pumped out of the boat. Any help would be appreciated.