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Thread: installing a usb phone charger problem

  1. #1
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    installing a usb phone charger problem

    i deffenetly made a mistake, while installing a simple (what i thought was simple), upgrade in my 1997 740il. I used the brown,( pos. wire from the telephone connector, and the blue with stripe ground). the usb charger don't have a grounding wire and I didn't think about it but I wired the negitve wire from the charger the ground from phone connector, it started to charge my cell phone but as soon as it did I go0t a clicking sound from the dash and theabs light was slightly dimming as it was clicking I unwired the device and the clicking continued I never started the vehicle only had it in posetion1 and I also disconnected the battery hoping that it would reset any modules to no avail. I got home from work and reconnected the battery and the nav screen turned on when I turned the key to pos.1 but it soon turned off and now will not turn on I also lost the climate control read out but the backlighting is on. I have no idea what to do now or how to fix this but before my stupid idea everything worked fine

  2. #2
    MauiM3Mania's Avatar
    MauiM3Mania is offline Observer/Master Skeptic Moderator
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  3. #3
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    I recharged my battery and everything is working at the moment, I bought my bmw for $500 and finding out that it is going to be well over the price of the car to sort out all the problems, I has a new problem that I found I have two chips in the glass lens and the headlamp is not working the turn signal turns on but not the headlamp. I changed out the bulbs to see if they where dead and they work just fine in the other headlamp. My question is if I put in a new or "new to the car" headlamp would I have to reprogram the headlamp to the lcm, and I think my lcm is also not working and could be the problem.

  4. #4
    dworthy's Avatar
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