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  1. #1
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    Oct 2007
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    Haughton, La
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    4,500

    Wiring Schematic needed

    0T438107 serial 40hp. I need a wiring diagram for this engine. My son bought a Seaark center console for marsh fishing. I decided to clean the wiring up and found a couple of issues. One the kill switch has been disconnected. The boat binnacle shifter is gear and throttle only. It has a remote key, remote kill switch and the tach connects under the console. Where could I find one. I've looked on the web but obviously not in the right places. Any help would be appreciated.
    Last edited by BroWhoop; 09-15-2018 at 07:15 AM.
    2014 Phoenix 721XP, 250 SHO, Bobs Action Jack, Dual Blades, 112 Ultrex, 2019 Lariat FX4 F150 Supercrew 4x4

  2. Member
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    Jun 2013
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    LONGVIEW TEXAS
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    #2
    service manual should have wiring dia., kill switch goes between blk yellow and grnd,when blk yel and blk connect engine dies
    .................................................. ...the scariest thing in life is the unknown ...................................

  3. Member
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    Oct 2007
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    #3
    Quote Originally Posted by JOE54 View Post
    service manual should have wiring dia., kill switch goes between blk yellow and grnd,when blk yel and blk connect engine dies
    He didn’t receive the service manual. That’s what I thought on the colors and function. I didn’t want to smoke something not knowing for sure. Thanks!!!
    2014 Phoenix 721XP, 250 SHO, Bobs Action Jack, Dual Blades, 112 Ultrex, 2019 Lariat FX4 F150 Supercrew 4x4

  4. Member
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    Mar 2012
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    Pelham, GA
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    #4
    The service manual is not the operating manual, has to be purchased from Mercury dealer, it’s how to maintain, troubleshoot and repair just about everything on the motor. Worth every penny.
    Mercury 2002 200hp Carbed Saltwater
    OT566776
    2002 Cape Horn 22' Bay

  5. Member
    Join Date
    Jun 2013
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    LONGVIEW TEXAS
    Posts
    14,015
    #5
    .................................................. ...the scariest thing in life is the unknown ...................................