help identifying signal wire O2 sensor

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  • TYBG
    Advanced Member
    • May 2012
    • 143

    #1

    help identifying signal wire O2 sensor

    I'm trying to find out what wire is my signal wire for my O2 sensor. I have a 325es 87. My setup is 3 wire harness=
    1 Shielded green
    2 brown
    3 green/blue
  • spdracrm3
    E30 Modder
    • Sep 2009
    • 959

    #2
    shielded green is signal to ECU

    Brown and Grn/Bu are heater control
    Attached Files
    Angus
    88 E30M3 X2
    89 325IX
    92 R100GS/PD
    :)

    Comment

    • TYBG
      Advanced Member
      • May 2012
      • 143

      #3
      Originally posted by spdracrm3
      shielded green is signal to ECU

      Brown and Grn/Bu are heater control
      Thanks much appreciated!

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