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Thread: Module hanging by its wires under trunk floor

  1. #1
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    Module hanging by its wires under trunk floor

    Could someone identify this module or gadget that is hanging by its wires under trunk/spare tire compartment? There is a simple mounting bracket attached to bottom of trunk floor that this thing clips into. Thanks,

    hanging module.jpg

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  3. #3
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    it is an Impact Sensor. If I recall, it sits between the front of the spare tire and the crossmember.
    There's one somewhere up front too...
    '91 Dinan 860 Stage III (new 6L engine)
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  4. #4
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    Quote Originally Posted by Timm View Post
    I vote tracker!
    I thought it might be a tracker, and i wish it was!

    Quote Originally Posted by cartoonz View Post
    it is an Impact Sensor. If I recall, it sits between the front of the spare tire and the crossmember.
    There's one somewhere up front too...
    Thanks for help! I should have taken a photo of the 'snap bracket' mounted under floor of spare. Bracket sure didnt look strong enough to hold it well. I could not identify the parts on any diagrams I looked at earlier today using realoem site.

  5. #5
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    Quote Originally Posted by JDP530 View Post
    I could not identify the parts on any diagrams I looked at earlier today using realoem site.
    It's there, under "Audio, Navigation, & Electronic Systems" Very bottom, airbag stuff... which also might be an indication not to mess with it too much, lol
    RealOEM does not show the mounting location, but it definitely is on the front of the spare tire well.
    '91 Dinan 860 Stage III (new 6L engine)
    '91 Dinan 850 TT stage III (brand new engine) 21st Century Tech meets 18th Century Dinan...
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    ...and a few other non BMW cars

  6. #6
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    So the 'module' hanging from under the tire well is one of the sensors for the Sonaradar that had been glued to knee bolster. I am going to strip out this old radar. I have removed the sensors and head unit but it will take more time to remove wiring.
    IMG_20170919_174739160.jpg
    IMG_20170918_173437709.jpg

  7. #7
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    Does anyone recognize the wires hanging here from under the front bumper support? I am wondering if these wires are for the horns because I dont see any horns anywhere behind the bumper trim panels top or bottom. Thanks,
    IMG_20171104_164729850_HDR.jpg
    IMG_20171104_164800733.jpg

  8. #8
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    Looks like horns wiring.

    P1000762.jpg
    WBR, Tony

  9. #9
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    Quote Originally Posted by mr1173 View Post
    Looks like horns wiring.

    P1000762.jpg
    Thank you, Mr1173! I had no idea horns were mounted underneath the car. So horns are missing from my car. Seems like and odd place to put them. I did see a couple of studs or bolts underneath but I had no idea what they were for. I have seen a couple of references and re-mounting horns up higher, behind the grills i guess.
    Last edited by JDP530; 11-04-2017 at 10:11 PM.

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    Most owners relocate the horns to one of the front frame arms - mine are on the passenger side, one inboard and one outboard. They will never be torn off the car again (unlike the OEM location).
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  11. #11
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    Quote Originally Posted by TxGR8White View Post
    Most owners relocate the horns to one of the front frame arms - mine are on the passenger side, one inboard and one outboard. They will never be torn off the car again (unlike the OEM location).
    I will look at mounting them behind the grill. Bottom side of car seems like a ridiculous place to put them considering how many people can't keep their bumpers off the curbs.

  12. #12
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    Can be easily mounted to existing bolts on power steering cooler. They face right out of the grille. Beep. Beep.
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  13. #13
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    Quote Originally Posted by toomanyparts View Post
    Can be easily mounted to existing bolts on power steering cooler. They face right out of the grille. Beep. Beep.
    Thanks!

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