{"product_id":"mercury-harnes-2helm-10ft-84-8m0048040","title":"Mercury – Dual-Helm Malfunction Light Harness | 10-Foot Cable | 84-8M0048040","description":"\u003cp data-start=\"0\" data-end=\"80\"\u003e\u003cstrong data-start=\"0\" data-end=\"80\"\u003eMercury – Dual-Helm Malfunction Light Harness | 10-Foot Cable | 84-8M0048040\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"82\" data-end=\"85\"\u003e\n\u003cp data-start=\"87\" data-end=\"99\"\u003e\u003cstrong data-start=\"87\" data-end=\"99\"\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"101\" data-end=\"566\"\u003eDual-helm boats need a clean way to send catalyst-warning signals to the dash light at the upper or secondary helm. The Mercury 84-8M0048040 Dual Helm Malfunction Light Harness provides a 10-foot connection dedicated to dual-helm layouts, ensuring the catalyst malfunction light receives the proper OBDM alert from any catalyst-equipped MerCruiser engine. It keeps the warning circuit reliable, clear, and ready to alert you the moment the system detects a problem.\u003c\/p\u003e\n\u003chr data-start=\"568\" data-end=\"571\"\u003e\n\u003cp data-start=\"573\" data-end=\"589\"\u003e\u003cstrong data-start=\"573\" data-end=\"589\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"593\" data-end=\"688\"\u003e\n\u003cstrong data-start=\"593\" data-end=\"624\"\u003e10-Foot Dual-Helm Harness –\u003c\/strong\u003e Sized for secondary or upper-helm routing on dual-helm boats.\u003c\/li\u003e\n\u003cli data-start=\"691\" data-end=\"791\"\u003e\n\u003cstrong data-start=\"691\" data-end=\"712\"\u003eOBDM Alert Path –\u003c\/strong\u003e Carries catalyst malfunction signals directly to the dash-mounted indicator.\u003c\/li\u003e\n\u003cli data-start=\"794\" data-end=\"895\"\u003e\n\u003cstrong data-start=\"794\" data-end=\"826\"\u003eCatalyst-Engine Compatible –\u003c\/strong\u003e Works with all MerCruiser engines equipped with a catalyst system.\u003c\/li\u003e\n\u003cli data-start=\"898\" data-end=\"993\"\u003e\n\u003cstrong data-start=\"898\" data-end=\"921\"\u003eOEM Connector Fit –\u003c\/strong\u003e Mercury factory connectors ensure proper alignment and a secure hold.\u003c\/li\u003e\n\u003cli data-start=\"996\" data-end=\"1087\"\u003e\n\u003cstrong data-start=\"996\" data-end=\"1018\"\u003eFlexible Routing –\u003c\/strong\u003e Ideal length for upper-helm runs or short secondary console paths.\u003c\/li\u003e\n\u003cli data-start=\"1090\" data-end=\"1196\"\u003e\n\u003cstrong data-start=\"1090\" data-end=\"1121\"\u003eReliable Warning Delivery –\u003c\/strong\u003e Ensures your malfunction light activates as soon as a fault is detected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1198\" data-end=\"1201\"\u003e\n\u003cp data-start=\"1203\" data-end=\"1220\"\u003e\u003cstrong data-start=\"1203\" data-end=\"1220\"\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1224\" data-end=\"1270\"\u003eAll \u003cstrong data-start=\"1228\" data-end=\"1268\"\u003ecatalyst-equipped MerCruiser engines\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1273\" data-end=\"1326\"\u003eDash-Mounted Catalyst Malfunction Light (8M0046481)\u003c\/li\u003e\n\u003cli data-start=\"1329\" data-end=\"1382\"\u003eDual-helm installations requiring a 10-foot harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1384\" data-end=\"1387\"\u003e\n\u003cp data-start=\"1389\" data-end=\"1425\"\u003e\u003cstrong data-start=\"1389\" data-end=\"1425\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1427\" data-end=\"1832\"\u003eThis harness gives dual-helm vessels a clean way to extend the catalyst-warning signal to a second station. With 10 feet of length, it fits neatly into upper-helm or co-pilot helm layouts and routes easily through console structures. Once connected, the malfunction light functions just like the primary helm light—giving you a clear, immediate visual alert anytime the catalyst system requires attention.\u003c\/p\u003e\n\u003chr data-start=\"1834\" data-end=\"1837\"\u003e\n\u003cp data-start=\"1839\" data-end=\"1854\"\u003e\u003cstrong data-start=\"1839\" data-end=\"1854\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1856\" data-end=\"2213\"\u003eCatalyst alerts are tied directly to emissions and engine-protection diagnostics. Mercury’s OEM harness ensures the signal arrives cleanly with no interference or incorrect wiring logic. Aftermarket connectors often cause false alarms or missed warnings, but this factory-built harness provides the reliability and durability needed in a marine environment.\u003c\/p\u003e\n\u003chr data-start=\"2215\" data-end=\"2218\"\u003e\n\u003cp data-start=\"2220\" data-end=\"2227\"\u003e\u003cstrong data-start=\"2220\" data-end=\"2227\"\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2229\" data-end=\"2370\"\u003e\u003cstrong data-start=\"2229\" data-end=\"2268\"\u003eQ1: What does this harness connect?\u003c\/strong\u003e\u003cbr data-start=\"2268\" data-end=\"2271\"\u003eIt links the engine’s OBDM catalyst-alert circuit to the malfunction light at a \u003cstrong data-start=\"2351\" data-end=\"2369\"\u003esecondary helm\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2372\" data-end=\"2530\"\u003e\u003cstrong data-start=\"2372\" data-end=\"2421\"\u003eQ2: Why choose the 10-foot dual-helm version?\u003c\/strong\u003e\u003cbr data-start=\"2421\" data-end=\"2424\"\u003eIt’s ideal for upper helms, tower helms, or secondary consoles that sit close to the primary routing path.\u003c\/p\u003e\n\u003cp data-start=\"2532\" data-end=\"2635\"\u003e\u003cstrong data-start=\"2532\" data-end=\"2581\"\u003eQ3: Will it work with all MerCruiser engines?\u003c\/strong\u003e\u003cbr data-start=\"2581\" data-end=\"2584\"\u003eYes—so long as the engine is \u003cstrong data-start=\"2613\" data-end=\"2634\"\u003ecatalyst-equipped\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2637\" data-end=\"2749\"\u003e\u003cstrong data-start=\"2637\" data-end=\"2679\"\u003eQ4: Is the malfunction light included?\u003c\/strong\u003e\u003cbr data-start=\"2679\" data-end=\"2682\"\u003eNo. The dash light is sold separately as part number \u003cstrong data-start=\"2735\" data-end=\"2748\"\u003e8M0046481\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2751\" data-end=\"2868\"\u003e\u003cstrong data-start=\"2751\" data-end=\"2785\"\u003eQ5: Is installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"2785\" data-end=\"2788\"\u003eNo. It plugs in easily using OEM connectors and routes like any Mercury harness.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936019730723,"sku":"84-8M0048040","price":25.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV709513.jpg?v=1698795792","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-harnes-2helm-10ft-84-8m0048040","provider":"PartsVu","version":"1.0","type":"link"}