i drilled the hull straight into the rear compartments. so the nipple that came with the system was too short. I put a coupling and extended the nipple by doing this i had to push the nipple through the boat and tight it with it sticking outside the boat. My friend just left and i think he might of made it worst i told him to only small turns well he was cranking it on. Now i have one more problem probably the biggest problem the pump is not turning off and the ground wire and hot wires are over heating and the pump is hot i think it might be the switch but i not sure until i remove the now installed switch.