{"product_id":"mercury-gauge-volt-0-18-79-8m6020021","title":"Mercury – Voltmeter 8–18V | Electrical System Monitoring | White Face | Chrome Bezel | 79-8M6020021","description":"\u003cp data-start=\"0\" data-end=\"103\"\u003e\u003cstrong data-start=\"0\" data-end=\"103\"\u003eMercury – Voltmeter 8–18V | Electrical System Monitoring | White Face | Chrome Bezel | 79-8M6020021\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"105\" data-end=\"108\"\u003e\n\u003cp data-start=\"110\" data-end=\"531\"\u003e\u003cstrong data-start=\"110\" data-end=\"122\"\u003eOverview\u003c\/strong\u003e\u003cbr data-start=\"122\" data-end=\"125\"\u003eThis 8–18V voltmeter gives you a clean, steady look at your electrical system without bouncing around when the boat rocks or hits a little chop. The needle settles smoothly, so dips or spikes stand out right away. Out on the water, it becomes one of those quick checks you make without thinking—glance, confirm, and keep going. It’s a simple, reliable gauge that helps you stay ahead of electrical hiccups.\u003c\/p\u003e\n\u003chr data-start=\"533\" data-end=\"536\"\u003e\n\u003cp data-start=\"538\" data-end=\"1049\"\u003e\u003cstrong data-start=\"538\" data-end=\"554\"\u003eKey Features\u003c\/strong\u003e\u003cbr data-start=\"554\" data-end=\"557\"\u003e    • \u003cstrong data-start=\"583\" data-end=\"598\"\u003e8–18V Scale\u003c\/strong\u003e – Shows charging and battery voltage across the normal range.\u003cbr data-start=\"660\" data-end=\"663\"\u003e    • \u003cstrong data-start=\"689\" data-end=\"712\"\u003eSmooth Needle Sweep\u003c\/strong\u003e – Holds steady through chop, turns, and throttle changes.\u003cbr data-start=\"770\" data-end=\"773\"\u003e    • \u003cstrong data-start=\"799\" data-end=\"820\"\u003eStandard Dash Fit\u003c\/strong\u003e – Sits neatly in common dash cutouts.\u003cbr data-start=\"858\" data-end=\"861\"\u003e    • \u003cstrong data-start=\"887\" data-end=\"906\"\u003eBacklit Display\u003c\/strong\u003e – Easy to read when the light drops.\u003cbr data-start=\"943\" data-end=\"946\"\u003e    • \u003cstrong data-start=\"972\" data-end=\"996\"\u003eMarine-Durable Build\u003c\/strong\u003e – Handles spray, vibration, and everyday conditions.\u003c\/p\u003e\n\u003chr data-start=\"1051\" data-end=\"1054\"\u003e\n\u003cp data-start=\"1056\" data-end=\"1268\"\u003e\u003cstrong data-start=\"1056\" data-end=\"1087\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003cbr data-start=\"1087\" data-end=\"1090\"\u003e    • FourStroke outboards\u003cbr data-start=\"1136\" data-end=\"1139\"\u003e    • Verado series\u003cbr data-start=\"1178\" data-end=\"1181\"\u003e    • Pro XS engines\u003cbr data-start=\"1221\" data-end=\"1224\"\u003e    • SmartCraft systems\u003c\/p\u003e\n\u003chr data-start=\"1270\" data-end=\"1273\"\u003e\n\u003cp data-start=\"1275\" data-end=\"1660\"\u003e\u003cstrong data-start=\"1275\" data-end=\"1311\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003cbr data-start=\"1311\" data-end=\"1314\"\u003eOn the water, the gauge makes it easy to catch low voltage or odd charging behavior before it causes real trouble. Because the sweep stays calm, changes show up clearly without distracting you. It’s useful during long runs, while dockside, or anytime you’re running lights, pumps, or electronics. It quickly becomes a part of your normal routine.\u003c\/p\u003e\n\u003chr data-start=\"1662\" data-end=\"1665\"\u003e\n\u003cp data-start=\"1667\" data-end=\"1955\"\u003e\u003cstrong data-start=\"1667\" data-end=\"1682\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003cbr data-start=\"1682\" data-end=\"1685\"\u003eOEM gauges read Mercury’s electrical signals exactly the way they’re meant to, so the number you see is accurate. They hold up better to vibration, heat, and weather compared to cheaper replacements. Most boaters choose OEM because it keeps the electrical system honest.\u003c\/p\u003e\n\u003chr data-start=\"1957\" data-end=\"1960\"\u003e\n\u003cp data-start=\"1962\" data-end=\"2118\"\u003e\u003cstrong data-start=\"1962\" data-end=\"1969\"\u003eFAQ\u003c\/strong\u003e\u003cbr data-start=\"1969\" data-end=\"1972\"\u003e\u003cstrong data-start=\"1972\" data-end=\"2021\"\u003e1. How do I know if the voltmeter is failing?\u003c\/strong\u003e\u003cbr data-start=\"2021\" data-end=\"2024\"\u003eIf the needle sticks, barely moves, or jumps for no reason, the gauge is probably wearing out.\u003c\/p\u003e\n\u003cp data-start=\"2120\" data-end=\"2256\"\u003e\u003cstrong data-start=\"2120\" data-end=\"2160\"\u003e2. Does this gauge need calibration?\u003c\/strong\u003e\u003cbr data-start=\"2160\" data-end=\"2163\"\u003eMost rigs read correctly right away, but checking wiring and grounds during install is smart.\u003c\/p\u003e\n\u003cp data-start=\"2258\" data-end=\"2372\"\u003e\u003cstrong data-start=\"2258\" data-end=\"2294\"\u003e3. How does it handle saltwater?\u003c\/strong\u003e\u003cbr data-start=\"2294\" data-end=\"2297\"\u003eA quick rinse after each run helps it hold up well in saltwater conditions.\u003c\/p\u003e\n\u003cp data-start=\"2374\" data-end=\"2489\"\u003e\u003cstrong data-start=\"2374\" data-end=\"2420\"\u003e4. Anything important during installation?\u003c\/strong\u003e\u003cbr data-start=\"2420\" data-end=\"2423\"\u003eClean, tight power and ground connections keep the reading steady.\u003c\/p\u003e\n\u003cp data-start=\"2491\" data-end=\"2619\"\u003e\u003cstrong data-start=\"2491\" data-end=\"2547\"\u003e5. What does low voltage usually look like underway?\u003c\/strong\u003e\u003cbr data-start=\"2547\" data-end=\"2550\"\u003eThe needle drops toward the lower end and doesn’t recover under load.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936503288099,"sku":"79-8M6020021","price":30.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV1003055.jpg?v=1720533531","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-gauge-volt-0-18-79-8m6020021","provider":"PartsVu","version":"1.0","type":"link"}