{"product_id":"mercury-harnes-1helm-10ft-84-8m0048049","title":"Mercury – Malfunction Light Harness | 10-Foot Single-Helm Cable | 84-8M0048049","description":"\u003cp data-start=\"0\" data-end=\"82\"\u003e\u003cstrong data-start=\"0\" data-end=\"82\"\u003eMercury – Malfunction Light Harness | 10-Foot Single-Helm Cable | 84-8M0048049\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"84\" data-end=\"87\"\u003e\n\u003cp data-start=\"89\" data-end=\"101\"\u003e\u003cstrong data-start=\"89\" data-end=\"101\"\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"103\" data-end=\"512\"\u003eCatalyst-equipped MerCruiser engines need a clean, reliable way to connect their dash-mounted malfunction light to the engine’s diagnostic circuit. The Mercury 84-8M0048049 Malfunction Light Harness provides that link. At ten feet long, it’s sized for typical single-helm layouts and delivers a direct connection so the catalyst warning light can illuminate whenever the engine’s OBDM system detects an issue.\u003c\/p\u003e\n\u003chr data-start=\"514\" data-end=\"517\"\u003e\n\u003cp data-start=\"519\" data-end=\"535\"\u003e\u003cstrong data-start=\"519\" data-end=\"535\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"539\" data-end=\"639\"\u003e\n\u003cstrong data-start=\"539\" data-end=\"560\"\u003e10-Foot Harness –\u003c\/strong\u003e Built for single-helm installations requiring a clean run to the dash light.\u003c\/li\u003e\n\u003cli data-start=\"642\" data-end=\"752\"\u003e\n\u003cstrong data-start=\"642\" data-end=\"663\"\u003eOBDM Connection –\u003c\/strong\u003e Carries the catalyst malfunction signal from the engine to the dash-mounted indicator.\u003c\/li\u003e\n\u003cli data-start=\"755\" data-end=\"858\"\u003e\n\u003cstrong data-start=\"755\" data-end=\"787\"\u003eCatalyst-Engine Compatible –\u003c\/strong\u003e Designed for all MerCruiser engines equipped with a catalyst system.\u003c\/li\u003e\n\u003cli data-start=\"861\" data-end=\"951\"\u003e\n\u003cstrong data-start=\"861\" data-end=\"884\"\u003eOEM Connector Fit –\u003c\/strong\u003e Factory plugs ensure proper pin alignment and secure engagement.\u003c\/li\u003e\n\u003cli data-start=\"954\" data-end=\"1059\"\u003e\n\u003cstrong data-start=\"954\" data-end=\"978\"\u003eClean Routing Path –\u003c\/strong\u003e Flexible jacket makes it easy to run through rigging tunnels or behind panels.\u003c\/li\u003e\n\u003cli data-start=\"1062\" data-end=\"1169\"\u003e\n\u003cstrong data-start=\"1062\" data-end=\"1092\"\u003eReliable Signal Delivery –\u003c\/strong\u003e Allows the malfunction light to trigger accurately when service is needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1171\" data-end=\"1174\"\u003e\n\u003cp data-start=\"1176\" data-end=\"1193\"\u003e\u003cstrong data-start=\"1176\" data-end=\"1193\"\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1197\" data-end=\"1243\"\u003eAll \u003cstrong data-start=\"1201\" data-end=\"1241\"\u003eMerCruiser catalyst-equipped engines\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1246\" data-end=\"1299\"\u003eDash-mounted catalyst malfunction light (8M0046481)\u003c\/li\u003e\n\u003cli data-start=\"1302\" data-end=\"1338\"\u003eSingle-helm harness routing setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1340\" data-end=\"1343\"\u003e\n\u003cp data-start=\"1345\" data-end=\"1381\"\u003e\u003cstrong data-start=\"1345\" data-end=\"1381\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1383\" data-end=\"1839\"\u003eThis harness keeps the catalyst malfunction light tied directly into the engine’s diagnostic system. The ten-foot length gives you enough room to route it cleanly from the engine compartment to the helm without stretching or forcing tight bends. Once installed, it ensures the dash light responds immediately when the catalyst system logs a fault—similar to the check-engine light on a car—helping you address issues sooner and avoid bigger problems later.\u003c\/p\u003e\n\u003chr data-start=\"1841\" data-end=\"1844\"\u003e\n\u003cp data-start=\"1846\" data-end=\"1861\"\u003e\u003cstrong data-start=\"1846\" data-end=\"1861\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1863\" data-end=\"2273\"\u003eCatalyst warnings are tied to emissions and engine protection systems, so the wiring needs to be accurate and dependable. Mercury’s OEM harness matches the engine’s electrical logic exactly, preventing false alerts or silent failures that can happen with off-brand wiring. The connectors fit tightly, the shielding holds up, and the harness is built to survive heat, moisture, and vibration in the engine room.\u003c\/p\u003e\n\u003chr data-start=\"2275\" data-end=\"2278\"\u003e\n\u003cp data-start=\"2280\" data-end=\"2287\"\u003e\u003cstrong data-start=\"2280\" data-end=\"2287\"\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2289\" data-end=\"2419\"\u003e\u003cstrong data-start=\"2289\" data-end=\"2328\"\u003eQ1: What does this harness connect?\u003c\/strong\u003e\u003cbr data-start=\"2328\" data-end=\"2331\"\u003eIt links the engine’s OBDM catalyst alert circuit to the dash-mounted malfunction light.\u003c\/p\u003e\n\u003cp data-start=\"2421\" data-end=\"2538\"\u003e\u003cstrong data-start=\"2421\" data-end=\"2462\"\u003eQ2: Is it only for single-helm boats?\u003c\/strong\u003e\u003cbr data-start=\"2462\" data-end=\"2465\"\u003eYes. The 10-foot length is designed specifically for single-helm routing.\u003c\/p\u003e\n\u003cp data-start=\"2540\" data-end=\"2645\"\u003e\u003cstrong data-start=\"2540\" data-end=\"2586\"\u003eQ3: Will it work on any MerCruiser engine?\u003c\/strong\u003e\u003cbr data-start=\"2586\" data-end=\"2589\"\u003eIt works on any \u003cstrong data-start=\"2605\" data-end=\"2626\"\u003ecatalyst-equipped\u003c\/strong\u003e MerCruiser engine.\u003c\/p\u003e\n\u003cp data-start=\"2647\" data-end=\"2763\"\u003e\u003cstrong data-start=\"2647\" data-end=\"2703\"\u003eQ4: Does this harness include the malfunction light?\u003c\/strong\u003e\u003cbr data-start=\"2703\" data-end=\"2706\"\u003eNo. The light is sold separately (part number 8M0046481).\u003c\/p\u003e\n\u003cp data-start=\"2765\" data-end=\"2878\"\u003e\u003cstrong data-start=\"2765\" data-end=\"2805\"\u003eQ5: Is installation straightforward?\u003c\/strong\u003e\u003cbr data-start=\"2805\" data-end=\"2808\"\u003eYes. It uses OEM connectors and routes like any standard helm harness.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936019960099,"sku":"84-8M0048049","price":16.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV707230.jpg?v=1698795795","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-harnes-1helm-10ft-84-8m0048049","provider":"PartsVu","version":"1.0","type":"link"}