Mercury - Quicksilver Lanyard Stop Switch Cap Safety & Ignition Component Replacement for 65503A & 856654A Series 75095Q2. Overview. A working safety lanyard is essential every time you start the engine. The Mercury Marine 75095Q2 Quicksilver Lanyard Stop Switch Cap replaces worn or lost caps on Mercury and Mariner outboards, ensuring your emergency stop system works properly. It simply snaps onto the existing plug-style stop switch, restoring safe operation in seconds. Compact and durable, this