{"product_id":"mercury-harn-ext-outer-25-84-8m0159753","title":"Mercury – Outer Helm Extension Harness | 25-Foot Extension | 84-8M0159753","description":"\u003cp data-start=\"0\" data-end=\"77\"\u003e\u003cstrong data-start=\"0\" data-end=\"77\"\u003eMercury – Outer Helm Extension Harness | 25-Foot Extension | 84-8M0159753\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"79\" data-end=\"82\"\u003e\n\u003cp data-start=\"84\" data-end=\"605\"\u003e\u003cstrong data-start=\"84\" data-end=\"96\"\u003eOverview\u003c\/strong\u003e\u003cbr data-start=\"96\" data-end=\"99\"\u003eThis 25-foot outer helm extension harness gives you the extra distance needed to reach the outer engines on wide-beam triple- and quad-engine boats. When the standard harness isn’t long enough—and the rigging path winds around bulkheads or across a wide transom—this extension keeps you from pulling the wiring tight. It lets the harness run in a smoother, more natural line, making the whole setup feel calmer and easier to manage. It’s a simple way to keep a big multi-engine layout from getting cramped.\u003c\/p\u003e\n\u003chr data-start=\"607\" data-end=\"610\"\u003e\n\u003cp data-start=\"612\" data-end=\"1137\"\u003e\u003cstrong data-start=\"612\" data-end=\"628\"\u003eKey Features\u003c\/strong\u003e\u003cbr data-start=\"628\" data-end=\"631\"\u003e    • \u003cstrong data-start=\"657\" data-end=\"678\"\u003e25-Foot Extension\u003c\/strong\u003e – Extra-long reach for wide transoms and larger hulls.\u003cbr data-start=\"733\" data-end=\"736\"\u003e    • \u003cstrong data-start=\"762\" data-end=\"782\"\u003eOuter-Engine Use\u003c\/strong\u003e – Built for the outside engines on triple and quad setups.\u003cbr data-start=\"841\" data-end=\"844\"\u003e    • \u003cstrong data-start=\"870\" data-end=\"888\"\u003eOEM Connectors\u003c\/strong\u003e – Factory plugs that seat firmly and stay locked.\u003cbr data-start=\"938\" data-end=\"941\"\u003e    • \u003cstrong data-start=\"967\" data-end=\"987\"\u003eFlexible Routing\u003c\/strong\u003e – Helps avoid tight corners and pinched wiring.\u003cbr data-start=\"1035\" data-end=\"1038\"\u003e    • \u003cstrong data-start=\"1064\" data-end=\"1088\"\u003eReliable Signal Path\u003c\/strong\u003e – Keeps throttle and shift communication steady.\u003c\/p\u003e\n\u003chr data-start=\"1139\" data-end=\"1142\"\u003e\n\u003cp data-start=\"1144\" data-end=\"1312\"\u003e\u003cstrong data-start=\"1144\" data-end=\"1175\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003cbr data-start=\"1175\" data-end=\"1178\"\u003e    • Triple engine\u003cbr data-start=\"1217\" data-end=\"1220\"\u003e    • Quad engine\u003cbr data-start=\"1257\" data-end=\"1260\"\u003e    • Outer-engine helm pathways\u003c\/p\u003e\n\u003chr data-start=\"1314\" data-end=\"1317\"\u003e\n\u003cp data-start=\"1319\" data-end=\"1755\"\u003e\u003cstrong data-start=\"1319\" data-end=\"1355\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003cbr data-start=\"1355\" data-end=\"1358\"\u003eWith this extension in place, routing becomes a lot easier—especially on wide rigs where everything wants to be tight and squeezed. The extra length keeps the harness from kinking or stretching, which helps the controls feel more predictable. It also opens up the rigging bay so service work isn’t such a fight. On big boats, that extra room makes the whole setup feel cleaner and more manageable.\u003c\/p\u003e\n\u003chr data-start=\"1757\" data-end=\"1760\"\u003e\n\u003cp data-start=\"1762\" data-end=\"2049\"\u003e\u003cstrong data-start=\"1762\" data-end=\"1777\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003cbr data-start=\"1777\" data-end=\"1780\"\u003eOEM harnesses hold up to real marine punishment—vibration, heat, and salt spray—much better than generic wiring. The connectors fit exactly as Mercury designed, reducing the chance of loose plugs or random glitches. It’s dependable gear you won’t have to revisit later.\u003c\/p\u003e\n\u003chr data-start=\"2051\" data-end=\"2054\"\u003e\n\u003cp data-start=\"2056\" data-end=\"2248\"\u003e\u003cstrong data-start=\"2056\" data-end=\"2063\"\u003eFAQ\u003c\/strong\u003e\u003cbr data-start=\"2063\" data-end=\"2066\"\u003e\u003cstrong data-start=\"2066\" data-end=\"2115\"\u003eQ1: How do I know I need the 25-foot version?\u003c\/strong\u003e\u003cbr data-start=\"2115\" data-end=\"2118\"\u003eA: If your outer-engine harness comes up short or forces tight bends on a wide-beam triple or quad, this length usually solves it.\u003c\/p\u003e\n\u003cp data-start=\"2250\" data-end=\"2348\"\u003e\u003cstrong data-start=\"2250\" data-end=\"2290\"\u003eQ2: Do I need to configure anything?\u003c\/strong\u003e\u003cbr data-start=\"2290\" data-end=\"2293\"\u003eA: Nope—just plug it in and it extends the run cleanly.\u003c\/p\u003e\n\u003cp data-start=\"2350\" data-end=\"2455\"\u003e\u003cstrong data-start=\"2350\" data-end=\"2391\"\u003eQ3: How does it hold up in saltwater?\u003c\/strong\u003e\u003cbr data-start=\"2391\" data-end=\"2394\"\u003eA: Fine—rinse occasionally and keep an eye on the connectors.\u003c\/p\u003e\n\u003cp data-start=\"2457\" data-end=\"2555\"\u003e\u003cstrong data-start=\"2457\" data-end=\"2482\"\u003eQ4: Any install tips?\u003c\/strong\u003e\u003cbr data-start=\"2482\" data-end=\"2485\"\u003eA: Route it with smooth, gentle curves to avoid stressing the harness.\u003c\/p\u003e\n\u003cp data-start=\"2557\" data-end=\"2686\"\u003e\u003cstrong data-start=\"2557\" data-end=\"2608\"\u003eQ5: What are early signs it may be wearing out?\u003c\/strong\u003e\u003cbr data-start=\"2608\" data-end=\"2611\"\u003eA: Sluggish trim\/controls, intermittent signals, or visible jacket rubbing.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935986536739,"sku":"84-8M0159753","price":279.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV781470.jpg?v=1720534681","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-harn-ext-outer-25-84-8m0159753","provider":"PartsVu","version":"1.0","type":"link"}