Owners of older boats can now add safety protection easily. In an emergency, a quick pull on the lanyard stops the engine, preventing accidental runaway. Installs directly into ignition line. Comes with switch, red coiled lanyard and two disconnects.Emergency Engine Cut-Off Switch with Coiled LanyardKills ignition when lanyard is pulledFor use with conventional or magneto ignitionsUnique design keeps plunger down when lanyard is connectedSeals out moistureMakes reconnection easierPanel thickness up to 1/4"