Tuna, I yanked all my wiring out. Think my V was rewired three times over and they left the old wiring in.
From what I see, it looks like everything drains into the bilge area, then its pumped out. This seems to make the bilge pump work alot more. Do you have thru-hull scuppers and a rear floor drain ????, This is how it should look with the floor drain to the thru-hull scupper.
water from the deck then drains out from the lower thru hull fitting.
drain hose from deck drain to scupper/thruhull fitting.