andy welcome aboard.
Is the head leak raw water to the head for flushing or waste water that should be going to the holding tank?
You said leaking int the cabin, do you mean near the frig in the area by the mid-birth entrance and cabin steps?
Fresh water pump not working, when you turn on the switch at the galley does it light up red? Sign of power. If so then you need to check fo power a the pump which is located in the engine compartment. If power directly at pump but it isnot running then time for a new pump.
For a manual go the home page there is a link to one.
1997 2400 SCR
5.7 Vortec / Bravo 2