{"product_id":"merc-665","title":"Mercury MerCruiser Audio Warning Alarm Kit - 816492A6","description":"\u003cp\u003eThe \u003cstrong\u003eMercury MerCruiser Quicksilver 816492A6\u003c\/strong\u003e is a genuine Mercury Marine OEM \u003cstrong\u003eaudio warning alarm kit\u003c\/strong\u003e used on select MerCruiser sterndrive and inboard engine packages. This alarm kit provides an audible warning signal when supported engine protection circuits detect an unsafe operating condition.\u003c\/p\u003e\n\u003cp\u003eDepending on the engine package and wiring layout, the alarm system may be tied into monitored conditions such as low oil pressure, engine overheat, low drive lube level, or related MerCruiser warning circuits. The \u003cstrong\u003e816492A6\u003c\/strong\u003e version should be matched by engine serial number, harness configuration, and factory wiring diagram before ordering.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine OEM alarm kit.\u003c\/li\u003e\n\u003cli\u003eMercury\/MerCruiser part number: \u003cstrong\u003e816492A6\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eQuicksilver-style catalog reference: \u003cstrong\u003e710-816492A6\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDesigned for select MerCruiser sterndrive and inboard warning systems.\u003c\/li\u003e\n\u003cli\u003eProvides an audible warning horn\/buzzer signal for supported engine safety circuits.\u003c\/li\u003e\n\u003cli\u003eUsed in compatible helm, dash, engine harness, and instrument wiring layouts.\u003c\/li\u003e\n\u003cli\u003eUPC reference: \u003cstrong\u003e745061318540\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eImportant service part for failed, weak, intermittent, missing, or corroded warning buzzers.\u003c\/li\u003e\n\u003cli\u003eRelated to the \u003cstrong\u003e816492\u003c\/strong\u003e alarm kit family, but harness and terminal configuration must be verified before substitution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select gas-powered MerCruiser engine packages where the factory wiring diagram calls for \u003cstrong\u003e816492A6\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMerCruiser 3.0L inline-4\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMerCruiser 4.3L V6\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMerCruiser 5.0L and 5.7L V8\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMerCruiser 6.2L \/ 377 CID V8\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMerCruiser 8.1L and 8.2L big-block\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect Alpha and Bravo sterndrive\/inboard installations using the matching warning-alarm circuit and connector style.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this kit only where the Mercury\/MerCruiser parts diagram or wiring schematic specifically calls for \u003cstrong\u003e816492A6\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by MerCruiser engine serial number, harness plug style, instrument panel wiring, warning circuit layout, and engine service manual before ordering. The \u003cstrong\u003e816492A6\u003c\/strong\u003e and \u003cstrong\u003e816492A15\u003c\/strong\u003e kits are in the same alarm-kit family, but they may use different wiring arrangements, terminals, or production-specific connections. They should not be treated as interchangeable without serial-number confirmation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this alarm kit if the buzzer is silent during the proper key-on test, sounds weak, works intermittently, has corroded terminals, damaged wiring, cracked housing, or fails the diagnostic checks outlined for the engine. It should also be inspected when troubleshooting no-warning complaints, false alarms, alarm circuits that do not respond to verified sender inputs, or warning systems that have been bypassed or modified.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore replacing the alarm kit, verify power, ground, ignition feed, sender operation, harness continuity, and warning-circuit logic using the correct MerCruiser service manual. A failed oil-pressure switch, temperature sender, drive lube monitor, poor ground, corroded connector, or damaged helm harness can mimic a bad warning horn.\u003c\/p\u003e\n\u003cp\u003eInstall using the correct factory wiring connections. Do not bypass the alarm system or leave the boat in service with the audible warning disabled. After installation, perform the proper key-on and circuit test to confirm the buzzer sounds when the warning circuit is triggered.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e816492A6\u003c\/strong\u003e — Mercury\/MerCruiser OEM part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e710-816492A6\u003c\/strong\u003e — Quicksilver-style catalog reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e745061318540\u003c\/strong\u003e — UPC reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e816492A15\u003c\/strong\u003e — related alarm-kit family reference; verify by serial number and wiring diagram before substitution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe warning buzzer is a small component, but it is part of the engine protection system. A working alarm gives the operator an audible alert before overheating, low oil pressure, low drive lube, or another monitored fault causes serious damage. When comparing \u003cstrong\u003eA6\u003c\/strong\u003e and \u003cstrong\u003eA15\u003c\/strong\u003e, the key check is not engine displacement alone — it is the exact serial-number wiring diagram and connector configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563881693220,"sku":"816492A6","price":182.24,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/ef401610-faae-422b-83ef-79dd0ce104a4_4b97b2c1-7d52-4ae1-ade8-2cf0677287a2.png?v=1781232984","url":"https:\/\/marisolmarine.com\/products\/merc-665","provider":"Marisol Marine Company","version":"1.0","type":"link"}