{"product_id":"mercury-gauge-volt-0-18-79-8m6020057","title":"Mercury – Voltmeter 8–18V | Electrical System Monitoring | White Face | Black Bezel | 79-8M6020057","description":"\u003cp data-end=\"75\" data-start=\"0\"\u003e\u003cstrong data-end=\"75\" data-start=\"0\"\u003eMercury – Voltmeter 8–18V | Electrical System Monitoring | White Face | Black Bezel | 79-8M6020057\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-end=\"80\" data-start=\"77\"\u003e\n\u003cp data-end=\"527\" data-start=\"82\"\u003e\u003cstrong data-end=\"94\" data-start=\"82\"\u003eOverview\u003c\/strong\u003e\u003cbr data-end=\"97\" data-start=\"94\"\u003eThis 8–18V voltmeter gives you a straightforward look at how your electrical system is doing without bouncing around every time the boat moves. The needle settles into a calm, predictable sweep, so any dip or spike is easy to catch with a quick glance. Out on the water, it becomes a simple habit—check it, nod, and get back to running the boat. It’s the kind of gauge that keeps things honest without making a big deal out of it.\u003c\/p\u003e\n\u003chr data-end=\"532\" data-start=\"529\"\u003e\n\u003cp data-end=\"1070\" data-start=\"534\"\u003e\u003cstrong data-end=\"550\" data-start=\"534\"\u003eKey Features\u003c\/strong\u003e\u003cbr data-end=\"553\" data-start=\"550\"\u003e    • \u003cstrong data-end=\"594\" data-start=\"579\"\u003e8–18V Range\u003c\/strong\u003e – Shows battery and charging voltage across the normal operating window.\u003cbr data-end=\"670\" data-start=\"667\"\u003e    • \u003cstrong data-end=\"722\" data-start=\"696\"\u003eSmooth Needle Movement\u003c\/strong\u003e – Stays steady through chop, turns, and throttle changes.\u003cbr data-end=\"783\" data-start=\"780\"\u003e    • \u003cstrong data-end=\"830\" data-start=\"809\"\u003eStandard Dash Fit\u003c\/strong\u003e – Drops right into common dash openings.\u003cbr data-end=\"874\" data-start=\"871\"\u003e    • \u003cstrong data-end=\"916\" data-start=\"900\"\u003eBacklit Face\u003c\/strong\u003e – Easy to see when the light starts to fade.\u003cbr data-end=\"964\" data-start=\"961\"\u003e    • \u003cstrong data-end=\"1014\" data-start=\"990\"\u003eMarine-Durable Build\u003c\/strong\u003e – Handles spray, vibration, and long days on the water.\u003c\/p\u003e\n\u003chr data-end=\"1075\" data-start=\"1072\"\u003e\n\u003cp data-end=\"1289\" data-start=\"1077\"\u003e\u003cstrong data-end=\"1108\" data-start=\"1077\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003cbr data-end=\"1111\" data-start=\"1108\"\u003e    • FourStroke outboards\u003cbr data-end=\"1160\" data-start=\"1157\"\u003e    • Verado series\u003cbr data-end=\"1202\" data-start=\"1199\"\u003e    • Pro XS engines\u003cbr data-end=\"1245\" data-start=\"1242\"\u003e    • SmartCraft systems\u003c\/p\u003e\n\u003chr data-end=\"1294\" data-start=\"1291\"\u003e\n\u003cp data-end=\"1701\" data-start=\"1296\"\u003e\u003cstrong data-end=\"1332\" data-start=\"1296\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003cbr data-end=\"1335\" data-start=\"1332\"\u003eOut on the water, this gauge helps you pick up early signs of battery trouble or charging dips without needing to watch it closely. A steady sweep makes small changes obvious, which is helpful when you’re running lights, pumps, or other gear. It’s a quick-check gauge—easy to read, easy to trust. Over time, it just becomes part of keeping the boat running smoothly.\u003c\/p\u003e\n\u003chr data-end=\"1706\" data-start=\"1703\"\u003e\n\u003cp data-end=\"2000\" data-start=\"1708\"\u003e\u003cstrong data-end=\"1723\" data-start=\"1708\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003cbr data-end=\"1726\" data-start=\"1723\"\u003eOEM gauges follow Mercury’s electrical signals the way they’re supposed to, which keeps the readings stable. They hold up better to vibration, moisture, and heat than cheaper versions. Most boaters stick with OEM because it avoids the “is this reading right?” guessing game.\u003c\/p\u003e\n\u003chr data-end=\"2005\" data-start=\"2002\"\u003e\n\u003cp data-end=\"2168\" data-start=\"2007\"\u003e\u003cstrong data-end=\"2014\" data-start=\"2007\"\u003eFAQ\u003c\/strong\u003e\u003cbr data-end=\"2017\" data-start=\"2014\"\u003e\u003cstrong data-end=\"2068\" data-start=\"2017\"\u003e1. How do I know if the voltmeter is going bad?\u003c\/strong\u003e\u003cbr data-end=\"2071\" data-start=\"2068\"\u003eIf the needle barely moves, jumps around, or freezes in place, the gauge is probably wearing out.\u003c\/p\u003e\n\u003cp data-end=\"2319\" data-start=\"2170\"\u003e\u003cstrong data-end=\"2210\" data-start=\"2170\"\u003e2. Does this gauge need calibration?\u003c\/strong\u003e\u003cbr data-end=\"2213\" data-start=\"2210\"\u003eUsually it reads correctly from the start, but checking wiring and grounds during install is always smart.\u003c\/p\u003e\n\u003cp data-end=\"2446\" data-start=\"2321\"\u003e\u003cstrong data-end=\"2361\" data-start=\"2321\"\u003e3. How does it handle saltwater use?\u003c\/strong\u003e\u003cbr data-end=\"2364\" data-start=\"2361\"\u003eA quick rinse after the day’s run helps it hold up well through saltwater seasons.\u003c\/p\u003e\n\u003cp data-end=\"2585\" data-start=\"2448\"\u003e\u003cstrong data-end=\"2494\" data-start=\"2448\"\u003e4. Anything important during installation?\u003c\/strong\u003e\u003cbr data-end=\"2497\" data-start=\"2494\"\u003eClean power and ground connections make a big difference in how steady the needle stays.\u003c\/p\u003e\n\u003cp data-end=\"2743\" data-start=\"2587\"\u003e\u003cstrong data-end=\"2647\" data-start=\"2587\"\u003e5. What does low voltage usually look like on the gauge?\u003c\/strong\u003e\u003cbr data-end=\"2650\" data-start=\"2647\"\u003eThe needle will drop toward the lower end and stay there, often before anything else acts up.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936499912995,"sku":"79-8M6020057","price":34.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV1002994_5.jpg?v=1698797826","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-gauge-volt-0-18-79-8m6020057","provider":"PartsVu","version":"1.0","type":"link"}