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Here you see the switch on the port side, just under the anchor locker hatch.
Water connections: I contemplated quite a bit on the best way to do this. Should I tee into the forward head sink drain? Should I add another thru-hull on next haul out? I also wanted this pump to be not just limited to washing down the anchor. So, I purchased a 10 ft 5/8in garden hose and attached it to my input side of the pump with included fittings. The other end gets thrown overboard anytime I want to use the pump. I cut down the hose to 8ft (that’s what worked best for me) and added a brass collar and brass nut on the end to keep the end underwater. That end, seen in this photo, is attached via cord and carabiner to the anchor locker hatch, so it doesn’t fall down and is always there. I added a simple, small stainless steel eye hook the carabiner hooks on to. This hose can also be put in a bucket of fresh water if needed, dropping in the dinghy to bail it out after a rainstorm, or even, a backup to the backup emergency bilge. Now, I wasn’t limited to just raw water.
The output is a simple 1/2 coiled hose I got from my local hardware store. 1/2 gives much more flow and pressure than the standard smaller diameter hose coil. The nozzle came with the pump.