Shoreline Marine’s 3 Position Bilge Pump Switch is an On/Off/On design. It’s meant for applications where the bilge pump is equipped with an automatic float switch and you want the ability to turn the pump on manually, turn it off completely or to leave it set in the automatic mode operating from a float switch. The pumps automatic float switch can be either a remote or a self-contained style switch. Two separate lights on the panel illuminate to indicate when either the manual or auto setting of the circuit is engaged, there is no light present when the switch is in the off position. An integral circuit breaker is located right on the panel to protect the entire bilge pump circuit from over loading, easy to reset with a touch of a button. * Requires a 1 ¼” x 2 ½” cut out with 1 ½’ depth clearance to flush mount ** For use with Automatic Bilge System with Automatic Pumps or External Float Switches. NOTE : – The circuit breaker is intentionally on the negative side of the switch this is not a defect, circuit protection can reside on either the positive or negative side of a DC circuit. - You have to cut a hole, make 5 wire connections, drill 4 small holes and install 4 small screws. For most do-it-yourselfers this is pretty easy. - We state that a 1 ¼” X 2 ½” cut out is needed with 1 ½” of depth required. The cut out is correct and the Depth needs to be changed to 2 1/4” vs. 1 ½”.