{"product_id":"mercury-harnes-1helm-25ft-84-8m0048056","title":"Mercury – Malfunction Light Harness | 25-Foot Single-Helm Cable | 84-8M0048056","description":"\u003cp data-start=\"0\" data-end=\"82\"\u003e\u003cstrong data-start=\"0\" data-end=\"82\"\u003eMercury – Malfunction Light Harness | 25-Foot Single-Helm Cable | 84-8M0048056\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=\"556\"\u003eCatalyst-equipped MerCruiser engines rely on a clear dash-mounted warning light to alert you when the emissions system needs attention. The Mercury 84-8M0048056 Malfunction Light Harness gives you a full 25 feet of cable—ideal for single-helm boats with longer console runs or more complex routing paths. Once installed, it provides a clean, dependable connection so the catalyst malfunction light illuminates the moment the OBDM system detects a fault.\u003c\/p\u003e\n\u003chr data-start=\"558\" data-end=\"561\"\u003e\n\u003cp data-start=\"563\" data-end=\"579\"\u003e\u003cstrong data-start=\"563\" data-end=\"579\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"583\" data-end=\"683\"\u003e\n\u003cstrong data-start=\"583\" data-end=\"604\"\u003e25-Foot Harness –\u003c\/strong\u003e Designed for longer single-helm layouts that need extended routing distance.\u003c\/li\u003e\n\u003cli data-start=\"686\" data-end=\"797\"\u003e\n\u003cstrong data-start=\"686\" data-end=\"707\"\u003eOBDM Alert Path –\u003c\/strong\u003e Connects the engine’s catalyst fault signal directly to the dash-mounted warning light.\u003c\/li\u003e\n\u003cli data-start=\"800\" data-end=\"890\"\u003e\n\u003cstrong data-start=\"800\" data-end=\"827\"\u003eCatalyst Engine Ready –\u003c\/strong\u003e Fits all MerCruiser engines equipped with a catalyst system.\u003c\/li\u003e\n\u003cli data-start=\"893\" data-end=\"975\"\u003e\n\u003cstrong data-start=\"893\" data-end=\"921\"\u003eOEM Mercury Connectors –\u003c\/strong\u003e Ensures secure engagement and proper pin alignment.\u003c\/li\u003e\n\u003cli data-start=\"978\" data-end=\"1080\"\u003e\n\u003cstrong data-start=\"978\" data-end=\"1005\"\u003eFlexible Marine Cable –\u003c\/strong\u003e Routes easily through rigging tunnels, bulkheads, and tight helm spaces.\u003c\/li\u003e\n\u003cli data-start=\"1083\" data-end=\"1187\"\u003e\n\u003cstrong data-start=\"1083\" data-end=\"1112\"\u003eReliable Alert Delivery –\u003c\/strong\u003e Ensures the malfunction light activates promptly when service is needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1189\" data-end=\"1192\"\u003e\n\u003cp data-start=\"1194\" data-end=\"1211\"\u003e\u003cstrong data-start=\"1194\" data-end=\"1211\"\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1215\" data-end=\"1261\"\u003eAll \u003cstrong data-start=\"1219\" data-end=\"1259\"\u003eMerCruiser catalyst-equipped engines\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1264\" data-end=\"1317\"\u003eDash-Mounted Catalyst Malfunction Light (8M0046481)\u003c\/li\u003e\n\u003cli data-start=\"1320\" data-end=\"1378\"\u003eSingle-helm installations that require a 25-foot harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1380\" data-end=\"1383\"\u003e\n\u003cp data-start=\"1385\" data-end=\"1421\"\u003e\u003cstrong data-start=\"1385\" data-end=\"1421\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1423\" data-end=\"1829\"\u003eThis harness gives you the extra reach needed for clean, stress-free routing from the engine compartment all the way to the helm. Once connected, it keeps the catalyst warning light tied directly into the diagnostic system, giving you a quick visual cue—much like a check-engine light—whenever the catalyst requires inspection. It’s a simple, reliable way to stay ahead of potential emission-system issues.\u003c\/p\u003e\n\u003chr data-start=\"1831\" data-end=\"1834\"\u003e\n\u003cp data-start=\"1836\" data-end=\"1851\"\u003e\u003cstrong data-start=\"1836\" data-end=\"1851\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1853\" data-end=\"2212\"\u003eCatalyst warnings aren’t something you want to trust to generic wiring. Mercury’s OEM harness matches the engine’s electrical logic and provides solid shielding, preventing false alerts or missed warnings. Off-brand cables often struggle with poor fit or noise interference, but the factory harness ensures dependable alert behavior in real marine conditions.\u003c\/p\u003e\n\u003chr data-start=\"2214\" data-end=\"2217\"\u003e\n\u003cp data-start=\"2219\" data-end=\"2226\"\u003e\u003cstrong data-start=\"2219\" data-end=\"2226\"\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2228\" data-end=\"2351\"\u003e\u003cstrong data-start=\"2228\" data-end=\"2267\"\u003eQ1: What does this harness connect?\u003c\/strong\u003e\u003cbr data-start=\"2267\" data-end=\"2270\"\u003eIt links the engine’s OBDM catalyst signal to the dash-mounted malfunction light.\u003c\/p\u003e\n\u003cp data-start=\"2353\" data-end=\"2477\"\u003e\u003cstrong data-start=\"2353\" data-end=\"2392\"\u003eQ2: Why choose the 25-foot version?\u003c\/strong\u003e\u003cbr data-start=\"2392\" data-end=\"2395\"\u003eIt’s ideal for longer console layouts where shorter harnesses won’t reach cleanly.\u003c\/p\u003e\n\u003cp data-start=\"2479\" data-end=\"2587\"\u003e\u003cstrong data-start=\"2479\" data-end=\"2528\"\u003eQ3: Will it work with all MerCruiser engines?\u003c\/strong\u003e\u003cbr data-start=\"2528\" data-end=\"2531\"\u003eIt works on \u003cstrong data-start=\"2543\" data-end=\"2586\"\u003eany catalyst-equipped MerCruiser engine\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2589\" data-end=\"2688\"\u003e\u003cstrong data-start=\"2589\" data-end=\"2627\"\u003eQ4: Is the warning light included?\u003c\/strong\u003e\u003cbr data-start=\"2627\" data-end=\"2630\"\u003eNo. The light is sold separately as part number 8M0046481.\u003c\/p\u003e\n\u003cp data-start=\"2690\" data-end=\"2827\"\u003e\u003cstrong data-start=\"2690\" data-end=\"2724\"\u003eQ5: Is installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"2724\" data-end=\"2727\"\u003eInstallation is straightforward—plug in the OEM connectors and route like any standard helm harness.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936019632419,"sku":"84-8M0048056","price":23.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV704692.jpg?v=1698795793","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-harnes-1helm-25ft-84-8m0048056","provider":"PartsVu","version":"1.0","type":"link"}