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Thread: 2 stages rear window defroster switch wiring

  1. 06-25-2023, 07:27 AM #1
    carrera79
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    2 stages rear window defroster switch wiring

    hello,

    can someone help me with the wiring for my 2 stage rear window defrosting switch ?
    here is a picture of the switch
    Attachment 598627

    which color on A, B, C or D ?

    missing is the small bulb to light the switch on center, so I have 5 wires to put on ?
    I have 3 brown together, and a black with a grey also together.
    but I think the grey and the black should be separate, but what are the other wires I need ?

    Attachment 598628


    thanks for any help

    frederic Name: IMG_9611[2].jpg Views: 375 Size: 141.7 KBName: IMG_0359[1] copy.jpg Views: 343 Size: 132.5 KB
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  2. 06-27-2023, 11:47 AM #2
    NorthernThrux
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    See if this post is helpful. https://www.early911sregistry.org/fo...=1#post1029255
    Mine is a '73S. If not, I can pull the switch and take a picture.

    Ravi
    Early 911S Registry # 2395
    1973 Porsche 911S in ivory white 5sp MT
    2015 Porsche Macan S in agate grey 7sp PDK
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  3. 06-28-2023, 05:57 AM #3
    carrera79
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    hello,

    seen your post, if you can take a full picture would be lovely

    TIA

    fred
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  4. 07-08-2023, 04:58 AM #4
    Dmill
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    since you have it all apart...you may want to install the rubber grommets that went into the holes in the dash and sealed the switch...wasn't really much of a seal..but it kept the air from coming into the cabin
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  5. 07-08-2023, 09:31 AM #5
    NorthernThrux
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    Quote Originally Posted by carrera79 View Post
    hello,

    seen your post, if you can take a full picture would be lovely

    TIA

    fred
    Apologies, I’ve been doing some travelling. Will take a pic in the next few days.
    Early 911S Registry # 2395
    1973 Porsche 911S in ivory white 5sp MT
    2015 Porsche Macan S in agate grey 7sp PDK
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  6. 07-09-2023, 07:16 AM #6
    carrera79
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  7. 07-09-2023, 07:17 AM #7
    carrera79
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    thanks for help
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  8. 07-09-2023, 07:59 AM #8
    gerakroo
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    The letters are a bit confusing but i think:

    A , marked 3 on switch ? - Jumper to C + single black ,from tunnel harness
    B, marked 4 on switch ? - White black (from tunnel harness)
    C, marked 2 on switch ? - See A
    D, marked 1 on switch ? - Double black (from main harness)

    The spade terminal on the bulb holder gets a brown wire (3 x)
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  9. 07-09-2023, 08:59 AM #9
    _gonbau
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    I think it's the right switch. I don't know if the photo will help you much!
    Name: IMG_20190511_220651.jpg Views: 226 Size: 120.2 KB
    Baudett // https://www.instagram.com/Baudett_canarias/
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