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Thread: where to get power for lumbar support retrofit?

  1. #1
    Join Date
    Jul 2016
    Location
    saratoga ca
    Posts
    114
    My Cars
    2001 525i Touring

    where to get power for lumbar support retrofit?

    Hi all - i know that to get power to the lumbar you need to populate pins 13 and 14. From where should you take power/ground in the car?

  2. #2
    Join Date
    Feb 2014
    Location
    Alexandria, VA
    Posts
    9,049
    My Cars
    ‘01 540’00 528T’03 525T
    You already have power going into the seat, splice off of the switchleg wires. So pull out your meter, start probing the wires going into the switch box for your seat controls. Find the hot wire, key on of course in the ignition, once you figure out which wire feeds the switches, splice off of that.
    Set the controls for the heart of the sun

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