{"product_id":"sierra-mp39780-conventional-3-position-5-8-polyester-3-screw-terminal-12v-15-amp-ignition-starter-switch-11-mp39780","title":"Sierra MP39780 Marine Ignition Starter Switch – 3-Position, Conventional, Compact 5\/8\"","description":"\u003ch2\u003eSierra MP39780 Marine Ignition Starter Switch – 3-Position Conventional, Compact 5\/8\"\u003c\/h2\u003e\u003cp\u003eThe Sierra MP39780 is a compact marine ignition starter switch designed for conventional ignition systems on outboard and inboard engines. The 3-position action — Off, Ignition, and Start — provides reliable helm control over engine startup and shutdown. A corrosion-resistant polyester housing with an inner seal between the cylinder lock and contact plate keeps moisture out and prevents shorts, making it a durable choice for saltwater and high-humidity environments.\u003c\/p\u003e\u003cp\u003eThe 5\/8\" cylinder diameter and 7\/8\" mounting hole make this switch a direct fit for panels designed around the compact cylinder format. The 3-screw terminal layout suits conventional ignition wiring. Note: this switch does not include a push-to-choke function or a boot — plan accordingly if your installation requires either.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 11-MP39780\u003c\/li\u003e\n\u003cli\u003eSwitch Type: 3-Position (Off – Ignition – Start)\u003c\/li\u003e\n\u003cli\u003eIgnition Type: Conventional\u003c\/li\u003e\n\u003cli\u003eVoltage: 12V DC\u003c\/li\u003e\n\u003cli\u003eCurrent Rating: 15A\u003c\/li\u003e\n\u003cli\u003eSolenoid: 30A\u003c\/li\u003e\n\u003cli\u003eCylinder Diameter: 5\/8\"\u003c\/li\u003e\n\u003cli\u003eMounting Hole: 7\/8\"\u003c\/li\u003e\n\u003cli\u003eTerminals: 3 Screw\u003c\/li\u003e\n\u003cli\u003eHousing Material: Polyester (corrosion-resistant)\u003c\/li\u003e\n\u003cli\u003ePush-to-Choke: Not included\u003c\/li\u003e\n\u003cli\u003eBoot: Not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOutboard and inboard engines with conventional ignition systems\u003c\/li\u003e\n\u003cli\u003eMarine helm panels with a 7\/8\" mounting hole designed for a 5\/8\" cylinder switch\u003c\/li\u003e\n\u003cli\u003e12V DC electrical systems requiring a compact 3-position Off\/Ignition\/Start switch\u003c\/li\u003e\n\u003cli\u003eDirect replacement for worn or damaged OEM ignition switches on conventional-ignition engines with compact panel cutouts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThe MP39780 is the right pick when you have a conventional ignition engine and a panel cutout sized for the smaller 5\/8\" cylinder format — common on older or smaller outboards where panel space is tight. No boot is included, so if your installation is exposed to spray, source a compatible boot separately or consider the \u003ca href=\"\/products\/sierra-mp39770-marine-ignition-starter-switch-3-position-conventional-12v-15a\"\u003eSierra MP39770\u003c\/a\u003e, which is the 1-1\/8\" conventional switch that does include a boot. If your engine runs a magneto ignition rather than conventional, the \u003ca href=\"\/products\/sierra-mp39760-marine-ignition-starter-switch-3-position-magneto-12v-15a\"\u003eSierra MP39760 Magneto Ignition Switch\u003c\/a\u003e is the correct fit and includes push-to-choke.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250881396772,"sku":"11-MP39780","price":46.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/11-MP39780.jpg?v=1786511560","url":"https:\/\/marisolmarine.com\/products\/sierra-mp39780-conventional-3-position-5-8-polyester-3-screw-terminal-12v-15-amp-ignition-starter-switch-11-mp39780","provider":"Marisol Marine Company","version":"1.0","type":"link"}