1992 e36 318i saloon Headlight switch problem

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  1. 1992 e36 318i saloon Headlight switch problem (Solved) 
    #1
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    The little bulb in my headlight switch is always on as soon as the ignition is live and when i put my headlights or sidelights on the display on my radio dims. I have changed the headlight switch unit for a another one and still had the same thing.

    Has anyone else had this problem.
    Last edited by Mad_Bmw_Driver; 09-09-2010 at 13:00.
    My mini doesn't leak oil anymore it was just marking its territory
     
     

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    Sounds like you got a rogue wire behind the head unit, Is it the standard one fitted or aftermarket?
     
     

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    Quote Originally Posted by shamM3 View Post
    Sounds like you got a rogue wire behind the head unit, Is it the standard one fitted or aftermarket?
    Aftermarket (should have said that ) using a proper wiring harness from halfords
    My mini doesn't leak oil anymore it was just marking its territory
     
     

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    The headlight switch is always lit up.
    The idea is so you can see it to turn the lights on when you don't have the lights on...

    The dimming stereo might be normal too, bright for when it is bright outside, and dim when it's dark.
     
     

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    So was the problem always there or just after you put the new headunit in? Reason i'm asking is because theres a wire behind the stereo which illuminates OEM radio's with sidelights on so just thinking there may be a cross somewhere?

    You may need to snip a wire off your ISO block to sort this problem.

    Apart from your speakers can you tell us which wires are connected on the power side, picture would be even better
     
     

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    Mad_Bmw_Driver (09-09-2010)

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    Quote Originally Posted by TheEnd View Post
    The headlight switch is always lit up.
    The idea is so you can see it to turn the lights on when you don't have the lights on...

    The dimming stereo might be normal too, bright for when it is bright outside, and dim when it's dark.
    Sometimes its the simplest things

    I shall keep an eye out next time i'm in the bm
     
     

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    I have noticed that some of the adaptor looms are crossed for a few wires, the perm and switched live for example
     
     

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    Thanks for the replies guys what i am gonna tomorrow is disconnect my headunit and see if the light is still on.

    To be honest i cant remember if it was like that after i put the headunit. I have owned the car nearly 2 years and the last few days i have only just noticed it
    My mini doesn't leak oil anymore it was just marking its territory
     
     

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    The headlight switch light is always on with the ignition. Also my stereo dims slightly when i switch the light on. They are supposed to if you use the proper harness like you have. Its to cut down the glare from the H/U at night....

    A lot of people dont bother connecting the dimming function up when they install an aftermarket H/U.
     
     

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    Quote Originally Posted by steve23002 View Post
    The headlight switch light is always on with the ignition. Also my stereo dims slightly when i switch the light on. They are supposed to if you use the proper harness like you have. Its to cut down the glare from the H/U at night....

    A lot of people dont bother connecting the dimming function up when they install an aftermarket H/U.
    Steve and TheEnd have said it.... The headlight switch is always lit on ignition (So you can see it when you don't have lights on).
    And the HU will dim when turning your lights on to stop the glare at night. Also, if you have an OBC, you will notice the main display and clock will dim too, also to stop the glare from them. And if i'm correct, the odometer also dims.

    Ferret !
     
     

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