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Thread: Lucas 3 position switch question

  1. #1

    Default Lucas 3 position switch question

    Does anyone know how to wire a Lucas off/on/on switch for interior lights and dome light or side lamps and headlights? I had lights at first but then lost them due to a loose switch. Ordered a new one and still don't have lights. I have 12v coming to the switch but in the middle position there, none of the prongs on the back of the switch have power only in the second on position due I have 12v at one of the prongs.

    Thanks for any info.

  2. #2
    Join Date
    Apr 2008
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    The Granite State (NH)
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    3,435

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    --Mark

    1973 SIII 109 RHD 2.5NA Diesel

    0-54mph in just under 11.5 minutes
    (9.7 minutes now that she's a 3-door).

  3. #3
    Join Date
    Apr 2007
    Posts
    218

    Default



    Sorry, had to be done
    1965 Series 2A 109 pickup diesel

  4. #4
    Join Date
    Oct 2011
    Location
    Mountains of Western Pennsy.
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    552

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    I almost felt guilty for thinking this when I first saw the post. It is the only LUCAS switch I know of.

    Quote Originally Posted by S11A View Post


    Sorry, had to be done

  5. #5
    Join Date
    Jul 2007
    Location
    Davenport, IA
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    325

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    My 3-way had a "smoke" setting in the middle. Though it stopped smoking just after my parking lights went dead. Weird.

  6. #6
    Join Date
    May 2010
    Location
    Rutland, Vermont
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    755

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    I always keep a couple of these around...very handy to have. Name:  MasterImagePositive2.jpg
Views: 398
Size:  52.0 KB

  7. #7
    Join Date
    Sep 2010
    Location
    killingworth CT
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    767

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    Quote Originally Posted by mongoswede View Post
    I always keep a couple of these around...very handy to have. Name:  MasterImagePositive2.jpg
Views: 398
Size:  52.0 KB
    Too funny, On a more serious note, I have replaced some or most of the original switches with waterproof switches from the local Maritime boat shop. They are a little more expensive and don't look anything like a Lucas switch, the ones I chose are just made a little better than a Lucas switch, but not original.
    Last edited by cedryck; 09-19-2016 at 12:48 PM.

  8. #8

    Default

    Pretty simple to set up! Just remember that the settings for a Lucas 3-position switch are Off, Dim, and Flickering. And Bob's your uncle

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