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Thread: What are these cables for?

  1. #1
    Join Date
    Oct 2017
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    1991 BMW 525i E34

    What are these cables for?

    So yesterday i swapped my front lights and found cables dangling below it what are these for?

    https://imgur.com/bdj2WZ9


    Also found a couple below my central dash and was wondering what are those for too.

    https://imgur.com/9gXWL9k
    Last edited by runn3r; 01-13-2021 at 05:58 AM.

  2. #2
    Join Date
    Sep 2017
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    1995 525i E34 6-speed
    The connector in the engine bay has got me puzzled, but the ones in the center console are all Auto trans connectors.


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  3. #3
    Join Date
    Mar 2010
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    1989 535i Manual
    Pretty sure the round one goes to the front bumper wiring harness (fog lights, headlight washers, temp sensor, side marker lights etc). Do you have any of these options on your car, and if so do they work with that cable unplugged?

    "Big Red" 9/88 Build 535i/5: E.A.T. Chip, 24lb Bosch Design III, 3.46 LSD, 4x Clear corners, DINAN-style 750i muffler, Racing King Subframe Inserts, Koni/Vogtland suspension, E34 M5 swaybars, Brembo/Porterfield brakes, Turbodiesel grills, 16" Style 8 rims, Euro front plate, M5 rear filler plate.
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  4. #4
    Join Date
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    1991 BMW 525i E34
    I got fog lights but they work fine and also the temp sensor works fine too. Weird.

  5. #5
    Join Date
    Sep 2017
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    Quote Originally Posted by sbeckman7 View Post
    Pretty sure the round one goes to the front bumper wiring harness (fog lights, headlight washers, temp sensor, side marker lights etc). Do you have any of these options on your car, and if so do they work with that cable unplugged?
    There was no such connector. Those are all pry of the main body loom.


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  6. #6
    Join Date
    Mar 2010
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    1989 535i Manual
    Hmm. All I can tell you is that my car has that connector hooked up and it terminates at the front bumper wiring. It's not headlights, but I thought it was side markers, fog lights, etc. When I pulled the bumper off it was the only wiring connecting the bumper to the rest of the car, hence why I figured it was for the front bumper items

    "Big Red" 9/88 Build 535i/5: E.A.T. Chip, 24lb Bosch Design III, 3.46 LSD, 4x Clear corners, DINAN-style 750i muffler, Racing King Subframe Inserts, Koni/Vogtland suspension, E34 M5 swaybars, Brembo/Porterfield brakes, Turbodiesel grills, 16" Style 8 rims, Euro front plate, M5 rear filler plate.
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  7. #7
    Join Date
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    1995 525i E34 6-speed
    Quote Originally Posted by sbeckman7 View Post
    Hmm. All I can tell you is that my car has that connector hooked up and it terminates at the front bumper wiring. It's not headlights, but I thought it was side markers, fog lights, etc. When I pulled the bumper off it was the only wiring connecting the bumper to the rest of the car, hence why I figured it was for the front bumper items
    Hmmm. I am open to the possibility that it is an early e34 thing. But would need confirmation.


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  8. #8
    Join Date
    Jul 2011
    Location
    Ann Arbor, Michigan
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    1995 BMW 525i 5 speed
    Totally off the wall guess here but i think it might be for a motorized headlight aiming adjustment? Total guess on my part. Cheers, George

  9. #9
    Join Date
    Jan 2005
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    My Cars
    11/88 E32 750iL+98 E36M3
    electric headlight aim motor socket plug has only 3 pins.
    how does the plug for cruise control look like?
    Maybe you go thru all the pics at the end of the ETM under component location views https://shark.armchair.mb.ca/~dave/BMW/e34/
    Last edited by shogun; 01-16-2021 at 12:59 AM.
    Shogun's T&T for E32 series http://twrite.org/shogunnew/topmenu.htm

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