Sea-Dog Universal Kill Switch 420488-1, 5/8 Inch Mounting Hole, 15 Inch Lanyard

The Sea-Dog Universal Kill Switch, part number 420488-1, is a marine emergency cut-off switch that attaches to your life vest while operating a boat or personal watercraft. If you are thrown from the helm or move too far from the console, the coiled lanyard pulls the switch and instantly cuts battery power, stopping the engine. The switch features dual circuitry, so it can be wired for either ignition kill or magneto kill depending on your engine setup, making it a genuinely universal fit across boat and PWC ignition systems.

Construction is stamped brass and injection molded nylon and Delrin, built to hold up to a weatherproof marine environment. The included lanyard measures approximately 15 inches when coiled and stretches to about 48 inches, and should be replaced any time it becomes worn, cut, or frayed since a compromised lanyard will not reliably trip the switch. The mounting hole is 5/8 inch in diameter, and the switch is rated for a maximum panel thickness of 3/8 inch, so it installs into a standard helm or console cutout. Electrically, it is rated for 12 volts and a maximum draw of 5 amps. As with any kill switch, test it for proper function before each use to confirm it will cut power when needed.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420488-1
• Product Name: Kill Switch - Universal
• Kill Style: Universal (dual circuitry for ignition kill or magneto kill)
• Voltage: 12 volts
• Maximum Amp Draw: 5 amps
• Terminal Size: 7/16 inch
• Mounting Hole Diameter: 5/8 inch
• Maximum Panel Thickness: 3/8 inch
• Lanyard Length: approximately 15 inches coiled, 48 inches stretched
• Material: Stamped brass and injection molded nylon and Delrin
• Weight: 0.148 pounds
• Package Dimensions: 8 x 4 x 1 inches
• Operation Mode: OFF-NONE-ON
• Number of Positions: 2
• Circuit Type: 2-way
• Mounting Type: Panel mount
• Upper Temperature Rating: 194 degrees Fahrenheit
• UPC: 035514423762

Fitment

Universal fit for boats and personal watercraft; dual circuitry allows wiring for ignition kill or magneto kill applications.

Frequently Asked Questions

What is the Sea-Dog 420488-1 kill switch used for? It is a marine emergency cut-off switch, part number 420488-1, that clips to your life vest and instantly cuts battery power to the engine if you are thrown from the helm or move too far from the console.

Will this kill switch fit my boat or personal watercraft? Yes, the Sea-Dog 420488-1 is a universal kill switch with dual circuitry, so it can be wired for either ignition kill or magneto kill depending on your engine setup, making it compatible across most boat and PWC ignition systems.

What size mounting hole does this kill switch need? The 420488-1 requires a 5/8 inch diameter mounting hole and fits panels up to 3/8 inch thick.

How long is the lanyard on the Sea-Dog 420488-1? The lanyard measures approximately 15 inches when coiled and stretches to about 48 inches.

What voltage and amperage is the 420488-1 kill switch rated for? This kill switch is rated for 12 volts with a maximum draw of 5 amps.

What is the kill switch made of? The 420488-1 is constructed of stamped brass and injection molded nylon and Delrin, designed to hold up in a weatherproof marine environment.

How much does the Sea-Dog 420488-1 kill switch weigh? It weighs 0.148 pounds.

When should I replace the lanyard on my kill switch? Sea-Dog recommends replacing the lanyard on the 420488-1 kill switch any time it becomes worn, cut, or frayed, since a damaged lanyard may not reliably trip the switch.

Does this kill switch work for both ignition kill and magneto kill setups? Yes, dual circuitry on the 420488-1 allows it to be wired for either ignition kill or magneto kill depending on your application.

What terminal size does the 420488-1 kill switch use? The 420488-1 uses a 7/16 inch terminal size.

Should I test the kill switch before every use? Yes, the manufacturer states the 420488-1 kill switch should be tested for proper function before each use to make sure it will cut power when needed.

Is the Sea-Dog 420488-1 a two-position switch? Yes, it operates as a 2-way, 2-position switch with an OFF-NONE-ON operation mode.