1994 E36 325i - immobiliser switch

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  1. 1994 E36 325i - immobiliser switch 
    #1
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    Hello i wanted to get some information about setting up a hidden immobiliser switch which you have to either flick or press to then let the car start i wanted to put one on my BMW but i needed help on which wire i have to connect it to. People have put a switch to the fuel but i want it to be with the key so you have to the button to let the key turn. could some help me out.
     
     

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    You won't be able to get a button that stops the key turning, but you could wire a switch into the starter signal.
     
     

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    TAJ_786 (20-02-2012)

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    just fit a hidden switch wired to to the starter, so the switch has to be flicked before it will start
    ]
     
     

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    TAJ_786 (20-02-2012)

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    If your car has deadlocks then u will have a immoblier anyway, if u still want a switch dont forget its gotta be high ampage because of the starter motor.
    Just do what mrkebab said about the switch, find the cable that goes to starter motor, might b a big purple one from the ignition, cant remember 100% but find the one then cut it and connect to a switch.
     
     

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    TAJ_786 (20-02-2012)

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    has any one done this before and thats what im trying to do with the starter and how can i find out which exact wire it is so if i cut the big purple wire just connect the switch with that wire?
     
     

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    Where do you want the switch?
    There's a wire from the ignition barrel, low amps, and that will do it.

    I think it's black and green in colour.
     
     

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    ive brought a a random e36 switch a bit like this one BMW 3 Series E36 & E46 ASC Switch- ASC Traction Control Button | eBay so i want to put it on by my roof switch which you wont really think its got to do with start the car.
     
     

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    That is a momentary push switch, it doesn't latch or stay on.
    You can wire it through that, but you'll need to keep your finger on the button as you go to start it, and once started, you can release it.
     
     

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    #9
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    im going to have to do it that ways becuase if i have a flick swtich i might forget to put it back off and if its on then theres no point but im going to try that on the weekend thanks
     
     

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    Just use a multi meter to make sure you get the right wire then cut it and wire your switch in making sure the wire and switch is rated the same as the wire your connecting it too
    ]
     
     

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