{"product_id":"mercury-hrn-power-15ft-84-8m0150523","title":"Mercury – Diesel Engine Unswitched Power Harness 15 Foot | Constant Power Harness | 84-8M0150523","description":"\u003ch2\u003eMercury – Diesel Engine Unswitched Power Harness | 15 Ft | Constant Power Harness | 84-8M0150523\u003c\/h2\u003e\n\u003cp\u003eThe Mercury diesel engine unswitched power harness (15 ft) is designed for diesel installations that require continuous battery power to the engine or supporting electrical systems. This harness supplies always-on power and does not switch off with the engine, making it essential for diesel components that must remain energized at all times. The extended 15-foot length is ideal for larger engine rooms where batteries or power distribution points are positioned farther from the engine.\u003c\/p\u003e\n\u003cp\u003eBy eliminating the need for splices or extensions, this harness supports clean, relaxed routing and reduces strain on connectors. OEM diesel-specific wiring ensures steady voltage delivery while protecting sensitive electrical components from long-term wear, corrosion, and voltage loss.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnswitched Power Circuit – Provides constant battery power at all times\u003c\/li\u003e\n\u003cli\u003e15-Foot Harness Length – Designed for extended routing in larger engine rooms\u003c\/li\u003e\n\u003cli\u003eDiesel-Specific Electrical Design – Sized for Mercury diesel electrical loads\u003c\/li\u003e\n\u003cli\u003eOEM Wiring \u0026amp; Connectors – Factory-sealed terminals with marine-grade insulation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngine \u0026amp; Boat Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMercury diesel engines\u003c\/li\u003e\n\u003cli\u003eMechanical control systems\u003c\/li\u003e\n\u003cli\u003eDTS (Digital Throttle \u0026amp; Shift) control systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupplies constant (unswitched) power and remains live even when the engine is off\u003c\/li\u003e\n\u003cli\u003eIntended only for diesel applications requiring continuous electrical supply\u003c\/li\u003e\n\u003cli\u003eProper routing helps prevent chafing and connector stress\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1) What is an unswitched power harness used for?\u003c\/strong\u003e\u003cbr\u003eIt delivers continuous battery power to diesel engine systems or components that must remain energized at all times.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) When should I choose a 15-foot harness?\u003c\/strong\u003e\u003cbr\u003eChoose a 15-foot harness when batteries or power distribution points are located farther from the engine and shorter harnesses would require extensions or splicing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3) Is this harness compatible with DTS systems?\u003c\/strong\u003e\u003cbr\u003eYes. It supports Mercury diesel engines using both mechanical and DTS control systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4) Does this harness shut off when the engine stops?\u003c\/strong\u003e\u003cbr\u003eNo. This is an unswitched harness and remains powered continuously.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5) Why use an OEM Mercury harness instead of aftermarket wiring?\u003c\/strong\u003e\u003cbr\u003eOEM harnesses use the correct wire gauge, sealed connectors, and diesel-rated insulation to help prevent voltage drop, corrosion, and long-term electrical failures.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935993680163,"sku":"84-8M0150523","price":71.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV726487.jpg?v=1720534563","url":"https:\/\/partsvu.com\/en-mx\/products\/mercury-hrn-power-15ft-84-8m0150523","provider":"PartsVu","version":"1.0","type":"link"}