{"product_id":"mercury-harness-extension-mp-alert-20ft-84-8m0054185","title":"Mercury – MP Alert Harness Extension | 20-Foot Forward Routing Cable | 84-8M0054185","description":"\u003cp data-start=\"0\" data-end=\"87\"\u003e\u003cstrong data-start=\"0\" data-end=\"87\"\u003eMercury – MP Alert Harness Extension | 20-Foot Forward Routing Cable | 84-8M0054185\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"89\" data-end=\"92\"\u003e\n\u003cp data-start=\"94\" data-end=\"106\"\u003e\u003cstrong data-start=\"94\" data-end=\"106\"\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"108\" data-end=\"564\"\u003eSome MP Alert installations call for a forward-mounted warning light—especially on larger boats where people may approach from the bow or spend time in front-facing swim areas. The Mercury 84-8M0054185 MP Alert Harness Extension gives you \u003cstrong data-start=\"347\" data-end=\"358\"\u003e20 feet\u003c\/strong\u003e of reach to run an MP Alert light toward the front of the boat, making the Moving Prop warning visible from more angles. It plugs directly into the existing MP Alert wiring for a clean, reliable extension.\u003c\/p\u003e\n\u003chr data-start=\"566\" data-end=\"569\"\u003e\n\u003cp data-start=\"571\" data-end=\"587\"\u003e\u003cstrong data-start=\"571\" data-end=\"587\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"591\" data-end=\"702\"\u003e\n\u003cstrong data-start=\"591\" data-end=\"622\"\u003e20-Foot Extension Harness –\u003c\/strong\u003e Long enough for bow or forward-deck MP Alert light placement on bigger boats.\u003c\/li\u003e\n\u003cli data-start=\"705\" data-end=\"807\"\u003e\n\u003cstrong data-start=\"705\" data-end=\"731\"\u003ePlug-and-Play Design –\u003c\/strong\u003e OEM connectors allow quick installation with no splicing or modification.\u003c\/li\u003e\n\u003cli data-start=\"810\" data-end=\"920\"\u003e\n\u003cstrong data-start=\"810\" data-end=\"842\"\u003eExpanded Safety Visibility –\u003c\/strong\u003e Helps place the MP Alert light where swimmers and riders can see it sooner.\u003c\/li\u003e\n\u003cli data-start=\"923\" data-end=\"1035\"\u003e\n\u003cstrong data-start=\"923\" data-end=\"953\"\u003eFlexible Routing Options –\u003c\/strong\u003e Extra length makes it easy to pass through bulkheads, gunwales, or side panels.\u003c\/li\u003e\n\u003cli data-start=\"1038\" data-end=\"1156\"\u003e\n\u003cstrong data-start=\"1038\" data-end=\"1064\"\u003eMarine-Durable Build –\u003c\/strong\u003e Sealed cable and connectors built to handle vibration, moisture, and everyday conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1158\" data-end=\"1161\"\u003e\n\u003cp data-start=\"1163\" data-end=\"1180\"\u003e\u003cstrong data-start=\"1163\" data-end=\"1180\"\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1184\" data-end=\"1238\"\u003eAll Mercury MP Alert systems using oval smart lights\u003c\/li\u003e\n\u003cli data-start=\"1241\" data-end=\"1272\"\u003eSmartCraft-compatible engines\u003c\/li\u003e\n\u003cli data-start=\"1275\" data-end=\"1333\"\u003eMP Alert Add-A-Light kits and Y-harness expansion setups\u003c\/li\u003e\n\u003cli data-start=\"1336\" data-end=\"1386\"\u003eBoats needing forward-mounted Moving Prop alerts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1388\" data-end=\"1391\"\u003e\n\u003cp data-start=\"1393\" data-end=\"1429\"\u003e\u003cstrong data-start=\"1393\" data-end=\"1429\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1431\" data-end=\"1897\"\u003eThis harness gives you the reach needed to add or relocate an MP Alert light far forward on the boat. By extending the visible warning zone, you help swimmers and passengers recognize prop-movement danger before getting close to the stern. The 20-foot length allows clean, strain-free routing through long rigging channels, keeping the installation tidy and protected from wear. Once installed, the light activates automatically with the rest of the MP Alert system.\u003c\/p\u003e\n\u003chr data-start=\"1899\" data-end=\"1902\"\u003e\n\u003cp data-start=\"1904\" data-end=\"1919\"\u003e\u003cstrong data-start=\"1904\" data-end=\"1919\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1921\" data-end=\"2292\"\u003eMercury’s MP Alert system relies on sealed, properly pinned connectors to deliver reliable activation timing and strong LED output. The OEM extension harness ensures your forward-mounted light works exactly as intended—without flicker, delay, or moisture intrusion. Aftermarket extensions often fall short in marine environments, but the factory harness is built to last.\u003c\/p\u003e\n\u003chr data-start=\"2294\" data-end=\"2297\"\u003e\n\u003cp data-start=\"2299\" data-end=\"2306\"\u003e\u003cstrong data-start=\"2299\" data-end=\"2306\"\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2308\" data-end=\"2483\"\u003e\u003cstrong data-start=\"2308\" data-end=\"2381\"\u003eQ1: When would I choose the 20-foot extension instead of the 10-foot?\u003c\/strong\u003e\u003cbr data-start=\"2381\" data-end=\"2384\"\u003eFor larger boats or longer helm-to-bow routing paths where the shorter harness won’t reach cleanly.\u003c\/p\u003e\n\u003cp data-start=\"2485\" data-end=\"2613\"\u003e\u003cstrong data-start=\"2485\" data-end=\"2547\"\u003eQ2: Does this extension affect MP Alert light performance?\u003c\/strong\u003e\u003cbr data-start=\"2547\" data-end=\"2550\"\u003eNo. It simply extends the wiring—the system activates normally.\u003c\/p\u003e\n\u003cp data-start=\"2615\" data-end=\"2742\"\u003e\u003cstrong data-start=\"2615\" data-end=\"2667\"\u003eQ3: Can this be used with Y-harness add-on kits?\u003c\/strong\u003e\u003cbr data-start=\"2667\" data-end=\"2670\"\u003eYes. It works with any MP Alert expansion setup using oval smart lights.\u003c\/p\u003e\n\u003cp data-start=\"2744\" data-end=\"2871\"\u003e\u003cstrong data-start=\"2744\" data-end=\"2791\"\u003eQ4: Does it work on non-SmartCraft engines?\u003c\/strong\u003e\u003cbr data-start=\"2791\" data-end=\"2794\"\u003eThis extension is for MP Alert systems tied to SmartCraft-compatible engines.\u003c\/p\u003e\n\u003cp data-start=\"2873\" data-end=\"2980\"\u003e\u003cstrong data-start=\"2873\" data-end=\"2907\"\u003eQ5: Is installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"2907\" data-end=\"2910\"\u003eNo. Plug it in and route it like any other harness—no rewiring needed.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936019108131,"sku":"84-8M0054185","price":35.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/84-8m005418_1.jpg?v=1698795791","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-harness-extension-mp-alert-20ft-84-8m0054185","provider":"PartsVu","version":"1.0","type":"link"}