Review on Johnson Pumps 72303 001 Ultima Switch by Darius Early

Only four stars because he had no "real world" experience, only with my boat being pulled out of the water. Done as it should. The installation went straight away, the circuit diagram is clear. I wish I knew it wouldn't work until the sensor was about 3/4 full of water - I would lower it a little further into the hold. I installed mine using an aluminum tube (part cut off to make a "tee" and attached the sensor to it) and tucked the wires under the tube. He worked with thin silicon wire made from marine silicon. The depth of my cargo area is about 2 x 2 x 4 feet. The packaging was good. You need butt connectors. Somehow the wires come out the side of the sensor. Connects directly to the battery with a built-in fuse. I think this will work fine and puts my mind at ease. The alarm must be loud enough to alert port personnel.