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Thread: Slick Mag Harness

  1. #1
    moto657's Avatar
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    Default Slick Mag Harness

    Its time for new mag harnesses. I have an O-320, no suffix(which I believe is the same application as an O-320 A1A) and Slick 4371 LH/4370 RH mags.

    The harness application guide shows M4001 for A1A, A2D, C1A, C3A, C3B, D1D, D2G, D2H, D3G, E1J, E2D, E2G, E3D.

    And M4004 for A1B, A2A, A2B, A2C, A3A, A3B, A3C, B1A, B1B, B2A, B2B, B2C, B2D, B3A, B3B, B3C, C1B, C2A, C2B, C2C, C3B, C3C, D1A, D2B,E1A, E2A, E2B, E2H

    The 4001 shows out stock at Spruce until July1, 4004 is in stock. Anyone know the difference? Mags are on their way back from Aircraft Magneto Service, I would hate to wait until July to get all the fresh parts on.

  2. #2
    Steve Pierce's Avatar
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    Default Re: Slick Mag Harness

    I would have to look in my Slick manual but the O-320 Type Certificate might help.
    Attached Files Attached Files

  3. #3
    Vagabondblues's Avatar
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    Default Re: Slick Mag Harness

    Twenty some years ago when I made the Slick Application manual, Lycoming had a SI that covered the “optional” ignition wiring. About 2006 it was added to the operators manual and the SI was dropped.

    As it has been a few years, I would guess that the only difference is the routing of top and bottom leads per the attached drawings from the operators manuals.
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  4. #4
    Steve Pierce's Avatar
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    Default Re: Slick Mag Harness

    Quote Originally Posted by Vagabondblues View Post
    Twenty some years ago when I made the Slick Application manual, Lycoming had a SI that covered the “optional” ignition wiring. About 2006 it was added to the operators manual and the SI was dropped.

    As it has been a few years, I would guess that the only difference is the routing of top and bottom leads per the attached drawings from the operators manuals.
    Found it.
    PXL_20220608_135145449.jpg

  5. #5
    moto657's Avatar
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    Default Re: Slick Mag Harness

    Thanks for all the info, you guys never cease to amaze me.

    So is the M4004 harness the one meant for the alternate method of ignition wiring?

  6. #6
    Steve Pierce's Avatar
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    Default Re: Slick Mag Harness

    I called Champion today and never got a response.

  7. #7
    moto657's Avatar
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    Default Re: Slick Mag Harness

    Quote Originally Posted by Steve Pierce View Post
    I called Champion today and never got a response.
    Steve, thanks so much for calling them. Really appreciated.

  8. #8
    Gilbert Pierce's Avatar
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    Default Re: Slick Mag Harness

    Quote Originally Posted by Steve Pierce View Post
    I called Champion today and never got a response.
    That’s no surprise.


    https://kellyaero.com/airplane-engin...ition-harness/
    Last edited by Gilbert Pierce; 06-08-2022 at 07:40 PM.

  9. #9
    moto657's Avatar
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    Default Re: Slick Mag Harness

    Quote Originally Posted by Gilbert Pierce View Post
    Kelly shows no application for O-320A1A?

    o320A1a-Kelly.png

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