This ignition kill switch mounts directly into front brake line and wired between the positive coil terminal and the ignition switch. Shuts the ignition off when brake line pressure exceeds normal operating pressure as with a stuck throttle. Adjust-able from 500 to 1200 PSI and should be set 150 to 200 PSI above normal oper-ating pressure. Gives the driver time to react to a stuck throttle. When pressure is released the switch will power ON the ignition so engine can be restarted.