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Thread: Need help wiring a LED Switch I bought

  1. #1
    Regular Member Envy's Avatar
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    Default Need help wiring a LED Switch I bought

    Hi all

    Bougth this whilst in maplins today so I can turn on/off my rear blue light I installed see this thread.

    I thought it would be easy but it has four pins at the bottom. I expected three so Im confused as to how to wire this in.

    Any help would be much appreciated

    P.S The light I want to switch on / off is wired to the rear ciggie lighter.

  2. #2
    Full Member Knight Rider's Avatar
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    Default

    Normally just the 2 outside ones mate.


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    Regular Member Envy's Avatar
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    Quote Originally Posted by BLACK KNIGHT View Post
    Normally just the 2 outside ones mate.
    Thanks very much mate. I will go and give it ago now and see what happens.

    Cheers

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    Regular Member Envy's Avatar
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    Right im being a complete plonker tonight.

    Its not 4 pins its 5 doh!

    After getting it under a magnify glass I can now see the lettering for each connection.

    Does this make any sense to someone please.

    Cheers

  5. #5
    Full Member Knight Rider's Avatar
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    Done a wee bit of googling a came up with this mate

    The contacts shown in your post indicate a dual section switch. The contact labeled C1 (Common) is normally closed to NC1 (Normally closed 1), until the button is activated, then C1 is connected to NO1 (Normally open 1). Then when released, it returns to NC1. The very same thing happens in section 2 at the same time. In*effect 2 separate switches activated simultaneously. If higher current capability is needed, short C1 and C2 together, NO1 and NO2 together,*finally, NC1 and NC2 together. This effectively parallels the contacts for more surface area (metal-metal) hence more current can be switched.


  6. #6
    Regular Member Envy's Avatar
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    Thanks for that mate.

    It sort of makes sense to me but I going to leave it until tomorrow. Im tierd and prone to make mistakes now lol.

    For the meantime im going to drill the 18mm hole next to the ciggie lighter on the rear plate and fit the switch. Thats the easy bit.

    Cheers again

  7. #7
    Regular Member ScotsDragon's Avatar
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    Heres a quick diagram,

    Attachment 54934

    Positive and negative are for led,
    C1 is for you input
    NO1 normally open connection
    NC1 normally closed

    Is it a latching switch or momentary?

    Connect 12v to c1 and your light postitive to NO1

    I would wire led to illumination circuit,

    Hope this helps.

  8. #8
    Regular Member ScotsDragon's Avatar
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    Quote Originally Posted by BLACK KNIGHT View Post
    Done a wee bit of googling a came up with this mate

    The contacts shown in your post indicate a dual section switch. The contact labeled C1 (Common) is normally closed to NC1 (Normally closed 1), until the button is activated, then C1 is connected to NO1 (Normally open 1). Then when released, it returns to NC1. The very same thing happens in section 2 at the same time. In*effect 2 separate switches activated simultaneously. If higher current capability is needed, short C1 and C2 together, NO1 and NO2 together,*finally, NC1 and NC2 together. This effectively parallels the contacts for more surface area (metal-metal) hence more current can be switched.
    It is not a dual pole switch (not enough pins) that one does not work that way.

  9. #9
    Regular Member Envy's Avatar
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    Quote Originally Posted by ScotsDragon View Post
    Heres a quick diagram,

    Attachment 54934

    Positive and negative are for led,
    C1 is for you input
    NO1 normally open connection
    NC1 normally closed

    Is it a latching switch or momentary?

    Connect 12v to c1 and your light postitive to NO1

    I would wire led to illumination circuit,

    Hope this helps.
    Thats has made it so much clearer for me now. Thank you very much.

    Going to wire it up tomorrow now as I have switched all the kit off and I know I will only mess it up if I continue.

    Trial fitted the switch. The bezel will be painted black sapphire and a USB socket is going in (also blue led). Can't wait to get it finished.

    Thanks again for you help.

  10. #10
    Regular Member ScotsDragon's Avatar
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    Just noticed a problem, that switch is momentary, the light will only be on when you hold the button.


    You need a latching switch like this one...

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