{"product_id":"mercury-harn-ext-quad-84-8m0158127","title":"Mercury – Harness Extension (Triple\/Quad\/5\/6 Engine) | 48-Inch Multi-Engine Extension | 84-8M0158127","description":"\u003cp data-start=\"0\" data-end=\"104\"\u003e\u003cstrong data-start=\"0\" data-end=\"104\"\u003eMercury – Harness Extension (Triple\/Quad\/5\/6 Engine) | 48-Inch Multi-Engine Extension | 84-8M0158127\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"106\" data-end=\"109\"\u003e\n\u003cp data-start=\"111\" data-end=\"545\"\u003e\u003cstrong data-start=\"111\" data-end=\"123\"\u003eOverview\u003c\/strong\u003e\u003cbr data-start=\"123\" data-end=\"126\"\u003eThis 48-inch extension gives you extra room to run trim wiring on larger multi-engine setups—triple, quad, and even 5- or 6-engine rigs. It includes the dash lead, the ERC pad lead, and the Y-harness, so everything plugs in cleanly without piecing parts together. If you’re running Zero Effort controls or the bigger multi-engine dash trim pads, this extension helps the wiring fall into a smoother, more natural route.\u003c\/p\u003e\n\u003chr data-start=\"547\" data-end=\"550\"\u003e\n\u003cp data-start=\"552\" data-end=\"1066\"\u003e\u003cstrong data-start=\"552\" data-end=\"568\"\u003eKey Features\u003c\/strong\u003e\u003cbr data-start=\"568\" data-end=\"571\"\u003e    • \u003cstrong data-start=\"597\" data-end=\"618\"\u003e48-Inch Extension\u003c\/strong\u003e – Adds length for longer runs in big multi-engine boats.\u003cbr data-start=\"675\" data-end=\"678\"\u003e    • \u003cstrong data-start=\"704\" data-end=\"728\"\u003eDash + ERC Pad Leads\u003c\/strong\u003e – Includes both connection paths in one setup.\u003cbr data-start=\"775\" data-end=\"778\"\u003e    • \u003cstrong data-start=\"804\" data-end=\"826\"\u003eY-Harness Included\u003c\/strong\u003e – Splits the circuit cleanly for multi-engine trim pads.\u003cbr data-start=\"883\" data-end=\"886\"\u003e    • \u003cstrong data-start=\"912\" data-end=\"938\"\u003eZero Effort Compatible\u003c\/strong\u003e – Works with ZE control setups.\u003cbr data-start=\"970\" data-end=\"973\"\u003e    • \u003cstrong data-start=\"999\" data-end=\"1017\"\u003eOEM Connectors\u003c\/strong\u003e – Factory plugs that snap in tight and stay put.\u003c\/p\u003e\n\u003chr data-start=\"1068\" data-end=\"1071\"\u003e\n\u003cp data-start=\"1073\" data-end=\"1380\"\u003e\u003cstrong data-start=\"1073\" data-end=\"1104\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003cbr data-start=\"1104\" data-end=\"1107\"\u003e    • Triple engine\u003cbr data-start=\"1146\" data-end=\"1149\"\u003e    • Quad engine\u003cbr data-start=\"1186\" data-end=\"1189\"\u003e    • Five-engine rigs\u003cbr data-start=\"1231\" data-end=\"1234\"\u003e    • Six-engine rigs\u003cbr data-start=\"1275\" data-end=\"1278\"\u003e    • Zero Effort controls\u003cbr data-start=\"1324\" data-end=\"1327\"\u003e    • Multi-engine dash trim pads\u003c\/p\u003e\n\u003chr data-start=\"1382\" data-end=\"1385\"\u003e\n\u003cp data-start=\"1387\" data-end=\"1798\"\u003e\u003cstrong data-start=\"1387\" data-end=\"1423\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003cbr data-start=\"1423\" data-end=\"1426\"\u003eA bit of extra harness length makes a big difference on wide or long-deck boats. The wiring can follow a relaxed path instead of getting squeezed behind panels or forced around tight corners. That usually means cleaner trim response and far fewer issues down the road. It also keeps the rigging bay from turning into a tangle, which makes life a lot easier during service.\u003c\/p\u003e\n\u003chr data-start=\"1800\" data-end=\"1803\"\u003e\n\u003cp data-start=\"1805\" data-end=\"2042\"\u003e\u003cstrong data-start=\"1805\" data-end=\"1820\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003cbr data-start=\"1820\" data-end=\"1823\"\u003eOEM extensions fit the connectors exactly the way Mercury designed them. They hold up to vibration, spray, and heat, and you don’t get the loose-fit headaches or random trim glitches that come with off-brand extensions.\u003c\/p\u003e\n\u003chr data-start=\"2044\" data-end=\"2047\"\u003e\n\u003cp data-start=\"2049\" data-end=\"2209\"\u003e\u003cstrong data-start=\"2049\" data-end=\"2056\"\u003eFAQ\u003c\/strong\u003e\u003cbr data-start=\"2056\" data-end=\"2059\"\u003e\u003cstrong data-start=\"2059\" data-end=\"2100\"\u003eQ1: When would I need this extension?\u003c\/strong\u003e\u003cbr data-start=\"2100\" data-end=\"2103\"\u003eA: When your trim pad or Zero Effort wiring won’t quite reach across a triple, quad, or 5\/6-engine layout.\u003c\/p\u003e\n\u003cp data-start=\"2211\" data-end=\"2297\"\u003e\u003cstrong data-start=\"2211\" data-end=\"2251\"\u003eQ2: Any setup or calibration needed?\u003c\/strong\u003e\u003cbr data-start=\"2251\" data-end=\"2254\"\u003eA: None—plug it in and it works right away.\u003c\/p\u003e\n\u003cp data-start=\"2299\" data-end=\"2391\"\u003e\u003cstrong data-start=\"2299\" data-end=\"2326\"\u003eQ3: Saltwater friendly?\u003c\/strong\u003e\u003cbr data-start=\"2326\" data-end=\"2329\"\u003eA: Yes. Just rinse and check the connectors from time to time.\u003c\/p\u003e\n\u003cp data-start=\"2393\" data-end=\"2508\"\u003e\u003cstrong data-start=\"2393\" data-end=\"2423\"\u003eQ4: Any installation tips?\u003c\/strong\u003e\u003cbr data-start=\"2423\" data-end=\"2426\"\u003eA: Give the harness a smooth route with gentle bends so nothing gets pulled tight.\u003c\/p\u003e\n\u003cp data-start=\"2510\" data-end=\"2634\"\u003e\u003cstrong data-start=\"2510\" data-end=\"2547\"\u003eQ5: What are early signs of wear?\u003c\/strong\u003e\u003cbr data-start=\"2547\" data-end=\"2550\"\u003eA: Uneven trim response, intermittent behavior, or jacket rubbing along tight spots.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935987519779,"sku":"84-8M0158127","price":62.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV727500.jpg?v=1720534607","url":"https:\/\/partsvu.com\/en-au\/products\/mercury-harn-ext-quad-84-8m0158127","provider":"PartsVu","version":"1.0","type":"link"}