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  1. #1
    Registered Krumbsnatcher's Avatar
    My Boats:
    Magic 1996, Wizzard 29.9
    Join Date
    Jun 2003
    Newport Beach / California

    Pop Quiz on Wiring Looms

    Just for fun can you name the colors and what they are used for on the engine harness.

    Hopefully you can see the picture clearly.
    Attached Images Attached Images

  2. #2
    Registered frequentflyer's Avatar
    My Boats:
    1998 Powerplay 25
    Join Date
    May 2002
    Miami, FL
    Not off the top of my head. However, Red is + Black is - and the rest you'd better hope the other side of that harness matches...

    Or get the manual.

  3. #3
    Registered ken240's Avatar
    My Boats:
    1988, Baja, Sport 240
    Join Date
    Jun 2001
    Boxborough Ma
    Tan With the Blue stripe could be watter temp?

  4. #4
    Toxic FORMULA Platinum Member mopower's Avatar
    My Boats:
    1989 Formula SR-1 272 t/540's
    Join Date
    May 2002
    pitman nj
    Purple is 12v after the ignition switch to power guages and blue is usually 12v as in dash lights
    You can never have too much horsepower or money...It's just hard to have both.

  5. #5
    Registered David's Avatar
    My Boats:
    1981 Sunkisst Tunnel
    Join Date
    Oct 2000
    Black= ground
    Brown=ref electrode, Mercathode
    Orange=alternator output OR
    anode electrode, Mercathode
    Lt. blue/white=Trim up switch
    Gray= tach signal
    Green/white=Trim down switch
    Tan= water temp sender
    Lt. blue= oil press sender
    Pink= fuel gauge sender
    Brown/white=oil temp gauge
    Purple/white= Trim trailer switch
    Red= 12v (hot)
    Red/purple= 12v (fused)
    Purple/yellow= Ballast bypass
    Purple= Ignition switch (+12v)
    switch= Starter switch to starter solenoid to neutral start

    The preceding info is excerpted from Mercury Marine, published 1994, Service Manual #3

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