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Thread: Wiring a driver's seat without memory functions?

  1. #1
    Join Date
    Sep 2015
    Location
    San Diego, California
    Posts
    214
    My Cars
    1994 740i, 2003 525iT

    Wiring a driver's seat without memory functions?

    I'm installing some E32 front seats in my motor home and I just realized that the wiring on the driver's side is not nearly as straightforward as the passenger side due to the memory functions.

    On the passenger side all I had to do was connect 12v to the red/yellow wire and ground the brown wire.

    On the driver's side I'm totally lost. I suppose I need to trace each set of wires going to each motor, but maybe someone here has tips for me on which wires do what and how to proceed.

    By the way, we are three Bimmer family, see this pic:

    three-bimmers-DSC00910-wide-1200px.jpg
    I have wrenched on vehicles with:

    1 cylinder
    2 cylinders
    3 cylinders
    4 cylinders
    5 cylinders
    6 cylinders
    7 spoke wheels
    8 cylinders

  2. #2
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    48,165
    My Cars
    11/88 E32 750iL+98 E36M3
    Maybe.....if you find the plus and minus pins going into the SMM control unit, you might be able to move the seat without the memory function, SMM info here http://www.e38.org/e32/BMW_pdfs/
    for the wires you have to check the ETM of the built year the seat came off. https://shark.armchair.mb.ca/~dave/BMW/e32/
    SHOGUN'S TRICKS AND TIPS FOR THE SEVEN SERIES
    http://twrite.org/shogunnew/topmenu.html

  3. #3
    Join Date
    Sep 2015
    Location
    San Diego, California
    Posts
    214
    My Cars
    1994 740i, 2003 525iT
    Quote Originally Posted by shogun View Post
    Maybe.....if you find the plus and minus pins going into the SMM control unit, you might be able to move the seat without the memory function, SMM info here http://www.e38.org/e32/BMW_pdfs/
    for the wires you have to check the ETM of the built year the seat came off. https://shark.armchair.mb.ca/~dave/BMW/e32/
    Thanks for that info shogun, but I have already removed the original harness and I will replace it with the harness and switch from a passenger seat from the local breakers. I will post any details in case anyone else wants to put E32 seats in a motor home, go kart, etc... ;-)
    I have wrenched on vehicles with:

    1 cylinder
    2 cylinders
    3 cylinders
    4 cylinders
    5 cylinders
    6 cylinders
    7 spoke wheels
    8 cylinders

  4. #4
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    48,165
    My Cars
    11/88 E32 750iL+98 E36M3
    Just found info an on the German forum , but there they refer to the SMM module
    X649: (the one with 5 contacts)
    Pin 1 - Terminal 15
    Pin 3 - Terminal R
    Pin 6 - ground
    SHOGUN'S TRICKS AND TIPS FOR THE SEVEN SERIES
    http://twrite.org/shogunnew/topmenu.html

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