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Need help with o2 wiring M50 ODBI

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    Need help with o2 wiring M50 ODBI

    Searched for a few days but can't seem to find a definitive answer. I have a '92 M50 OBDI from an E34. The car harness has 4 wires for the o2 sensor. Can someone please tell me which wire is for what.

    Brown
    Black
    Yellow
    Green

    I'm running a universal Bosch o2 sensor right now and have it hooked up the following way

    CAR Side . o2 side

    Brown --------- White
    Black --------- White
    Yellow --------- Black
    Green ---------- Gray

    I just want to make sure I didn't screw anything up. Thank you.


    #2
    Take a look at page 165:

    http://wedophones.com/Manuals/BMW/19...g%20Manual.pdf

    Brown and Green/Blue go to the White heater wires, Black and Yellow go to the other two.

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