Sea-Dog 4-Position Ignition Key Switch 420379-1
Sea-Dog 4-Position Ignition Key Switch 420379-1 — Product description
The Sea-Dog 4-position ignition key switch is a clean universal replacement for a worn or dead helm switch. It runs the standard off, ignition, and start sequence, wires up through four blade terminals, and ships with two keys. The polypropylene body shrugs off spray and humidity, and the long shaft clears thicker dash panels.
When the key switch at your helm starts acting up, you feel it right away. Maybe the engine cranks slow, maybe the key spins loose in a sloppy barrel, maybe it won't catch at all. This Sea-Dog switch is a straightforward fix. It's a universal 4-position unit that runs the standard off, ignition, and start sequence, so it drops into most setups built around a blade-terminal switch.
Wiring is simple. Four blade terminals handle the connections, so you're not chasing an oddball plug or soldering anything. The polypropylene body won't corrode or crack the way a cheap housing does after a few seasons of salt spray. And the long shaft matters more than you'd think. If your dash is thick or you've got a backing plate behind it, a short shaft won't seat right, and this one gives you the length to tighten the nut down properly.
Two keys come in the box, so you've got a spare from day one. It's a small part that strands you at the ramp when it quits, and cheap insurance to have a solid one in place.
Key Features
- 4-position operation (Off, Ignition, Start): the standard cranking sequence that drops into most outboard and inboard setups.
- Four blade terminal connections: simple wiring with no soldering or proprietary plugs.
- Polypropylene body: won't corrode or crack under salt spray and humidity.
- Long shaft: seats cleanly through thick dash panels and backing plates.
- Two keys included: a built-in spare from the start.
Why Buy from NVN Marine
- Authorized Sea-Dog reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Sea-Dog Universal 4-Position Ignition Key Switch, Long Shaft |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 420379-1 |
| UPC | 035514423007 |
| Switch Positions | 4-Position (Off-Ignition-Start) |
| Body Material | Polypropylene |
| Electrical Connection | 4 Blade Terminals |
| Shaft | Long Shaft |
| Keys Included | Two Keys |
| Fitment | Universal |
Frequently asked questions
How many positions does this switch have?
Four. It runs the standard off, ignition, and start sequence found on most marine key switches.
How does it wire in?
Through four blade terminals. That keeps the connections simple, with no soldering or proprietary plugs to deal with.
What's the body made of?
Polypropylene. It resists the corrosion and cracking that metal housings can suffer after a few seasons in a salt environment.
Does it come with keys?
Yes, two keys are included, so you've got a spare right out of the box.
Why the long shaft?
The long shaft gives you enough length to seat and tighten the switch through a thick dash panel or a backing plate. A short shaft can't always reach.