Sea-Dog 420350-1 Three Position Ignition Switch, Off-Ignition-Start, 13/16 Inch Long Shaft, Stamped Brass

The Sea-Dog 420350-1 is a three position ignition switch built for off, ignition, and start functions on a boat's helm or dash panel. It uses a 13/16 inch diameter long shaft designed for panels up to 1-1/8 inch thick, so it drops into standard marine dash cutouts without modification. Electrical connection is made through three screw terminals, with an ignition circuit rated 15 Amps at 12 Volts DC and a solenoid (start) circuit rated 30 Amps at 12 Volts DC, giving it enough capacity to handle both accessory ignition load and cranking the starter solenoid directly. The switch body is constructed of stamped brass for corrosion resistance in a marine environment, and it ships with two keys so the boat owner has an immediate spare. This version does not include a rubber weatherproof boot over the switch cap; Sea-Dog also offers the 420355-1, an otherwise identical switch that does include the rubber boot, as a separate part number for installations that need extra splash protection. A blank replacement key is also available separately for this switch line. This is a panel-mount switch intended for helm consoles, so it is a straightforward swap for any three-terminal, three position ignition switch of the same shaft and panel specifications.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420350-1
• Switch Type: Three Position Ignition Switch
• Action: Off-Ignition-Start
• Number of Positions: 3
• Shaft Type: Long
• Shaft Diameter: 13/16 inch
• Maximum Panel Thickness: 1-1/8 inch
• Terminals: 3 screw terminals
• Ignition Circuit Rating: 15 Amps at 12 Volts DC
• Solenoid Circuit Rating: 30 Amps at 12 Volts DC
• Rubber Boot Cap: No (boot version available as a separate part, Sea-Dog 420355-1)
• Keys Included: 2
• Material: Stamped brass
• Weight: 0.404 pounds
• UPC: 035514423595

Fitment

Universal panel-mount ignition switch; fits any dash or helm panel up to 1-1/8 inch thick with a 13/16 inch shaft cutout and three-screw-terminal wiring.

Replaces (OEM)

No specific OEM cross-reference numbers are listed for this part.

Frequently Asked Questions

What functions does the Sea-Dog 420350-1 ignition switch have? It is a three position switch covering off, ignition, and start functions, controlled through a single 13/16 inch diameter long shaft.

What is the maximum panel thickness for this switch? The Sea-Dog 420350-1 is rated for panels up to 1-1/8 inch thick, matching its long shaft length.

How many electrical terminals does the 420350-1 have? Three screw terminals provide the electrical connection for this ignition switch.

What amperage can the ignition and solenoid circuits handle? The ignition circuit is rated 15 Amps at 12 Volts DC, and the solenoid (start) circuit is rated 30 Amps at 12 Volts DC on the Sea-Dog 420350-1.

Does this switch come with a rubber boot? No, the 420350-1 does not include a rubber boot cap. Sea-Dog makes a boot-equipped version under a different part number, 420355-1, for buyers who need that extra sealing.

What is the 420350-1 made of? The switch body is constructed of stamped brass, chosen for its resistance to corrosion in a marine environment.

How many keys are included with the switch? Two keys ship with the Sea-Dog 420350-1 ignition switch.

Can I get a spare key for this switch later? Yes, a blank replacement key is available as a separate part in the Sea-Dog ignition switch line.

How much does the 420350-1 ignition switch weigh? The Sea-Dog 420350-1 weighs 0.404 pounds.

Is the 420350-1 the same as the magneto-style Sea-Dog ignition switch? No, the magneto-style version is a different part with five screw terminals; the 420350-1 is the standard three-terminal off-ignition-start switch.

Will this switch fit any boat dash panel? The Sea-Dog 420350-1 is a universal panel-mount switch that fits any dash cutout sized for a 13/16 inch shaft and panel thickness up to 1-1/8 inch, without being tied to a specific boat make or engine.