Black wire connects directly to earth on the outboard. Emergency kill switch with lanyard for all outboard motors. Many older outboard motors do not provide protection by cutting off the engine ignition if the operator falls overboard. This essential safety device includes a lanyard that attaches to your wrist or clothing, stopping the engine in the event of an accident on the water. The switch is normally open circuit and closes when activated by pulling the lanyard. It can also be activated by pressing the red button. If there is no spark in your outboard’s ignition system, the existing kill switch may be faulty or stuck in the off position and require replacement. Material: ABS Color: Black + Red Package Contents: 1 x Emergency Kill Stop Switch 1 x Kill Switch Lanyard Only the above items are included; other products are not included. Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.