{"product_id":"332-7778a12-mercury-switch-box-genuine-used-part","title":"332-7778A12 Mercury Switch Box | Genuine Used Part","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Genuine Mercury ADI Switch Box - Part Number: 332-7778A12\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Mercury switch box \/ ignition module used on Mercury and Mariner ADI ignition systems. This module stores ignition energy from the stator and releases it to the ignition coils when triggered, providing spark control across compatible 2-cylinder, 3-cylinder, 4-cylinder and V6 two-stroke applications.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n ⚙️ Key Features\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Mercury switch box \/ ignition module\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct OEM part number 332-7778A12\n\u003c\/p\u003e\n\u003cp\u003e\n • ADI ignition-system switch box\n\u003c\/p\u003e\n\u003cp\u003e\n • Broad Mercury \/ Mariner two-stroke ignition family use\n\u003c\/p\u003e\n\u003cp\u003e\n • Cross-references with CDI Electronics and Sierra replacement modules\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM Supersession Chain:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A12 later Mercury switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A9 earlier related switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A6 earlier related switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A5 earlier related switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A3 earlier related switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A1 earlier related switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-5524 earlier switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A12\n\u003c\/p\u003e\n\u003cp\u003e\n • 7778A12\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A9\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A6\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A5\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A3\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-7778A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 332-5524\n\u003c\/p\u003e\n\u003cp\u003e\n • 7778A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 7778A3\n\u003c\/p\u003e\n\u003cp\u003e\n • 7778A5\n\u003c\/p\u003e\n\u003cp\u003e\n • 7778A6\n\u003c\/p\u003e\n\u003cp\u003e\n • 7778A9\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • CDI Electronics: 114-7778\n\u003c\/p\u003e\n\u003cp\u003e\n • Sierra: 18-5775\n\u003c\/p\u003e\n\u003cp\u003e\n • Redline \/ aftermarket: RL5775\n\u003c\/p\u003e\n\u003cp\u003e\n • Aftermarket switch box replacements using 114-7778 reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🚤 Compatibility\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Commonly used on:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury \/ Mariner ADI two-stroke outboard ignition systems\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine models:\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 50HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 60HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 70HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 75HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 80HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 90HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 105 Jet ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 115HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 135HP V6 ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 140HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 150HP V6 ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 175HP V6 ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200HP V6 ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 220HP ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225HP V6 ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250HP V6 ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 275HP V6 ADI ignition applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mariner matching ADI ignition applications using 332-7778A12\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • HP Range: commonly 50HP - 275HP where the serial-numbered ignition diagram specifies the 7778 switch box family\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: Mercury \/ Mariner two-stroke ADI ignition outboard\n\u003c\/p\u003e\n\u003cp\u003e\n • Year Range: Broad late-1970s through 1990s ADI ignition family use depending on horsepower\n\u003c\/p\u003e\n\u003cp\u003e\n • Serial Note: Match by exact Mercury serial-numbered ignition diagram, number of switch boxes fitted and wiring colour layout.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔌 Function\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The switch box stores stator-generated ignition energy and releases it to the ignition coils when triggered, creating spark at the correct timing point.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of failure:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • No spark on one bank or selected cylinders\n\u003c\/p\u003e\n\u003cp\u003e\n • Intermittent spark loss when hot\n\u003c\/p\u003e\n\u003cp\u003e\n • Misfire under load\n\u003c\/p\u003e\n\u003cp\u003e\n • Hard starting or no-start condition\n\u003c\/p\u003e\n\u003cp\u003e\n • Spark returns when switch box is substituted\n\u003c\/p\u003e\n\u003cp\u003e\n • Stator and trigger test correctly but spark remains absent\n\u003c\/p\u003e\n\u003cp\u003e\n • Switch box damage from kill-circuit voltage or water ingress\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 📦 Condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine used part\n\u003c\/p\u003e\n\u003cp\u003e\n • Removed from running engine where applicable\n\u003c\/p\u003e\n\u003cp\u003e\n • In good working condition unless otherwise stated\n\u003c\/p\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53392177889572,"sku":"285264V","price":125.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_86ee2275-0099-4afa-ac12-ef15d968b354.jpg?v=1777258888","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/332-7778a12-mercury-switch-box-genuine-used-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}