Mystery connector on E34 M50 OBD1 harness

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  • radr
    Member
    • Oct 2016
    • 81
    #1

    Mystery connector on E34 M50 OBD1 harness

    I bought the car swapped and I'm going through to clean it up now. I've confirmed via part #s that the OBD1 harness comes from an E34 M50 car. I found this connector hanging out in the same area as the DME connector but I can't figure out what it is even with wiring diagrams. Does anyone have an idea?
    Attached Files
    '90 325is + S52

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    Tags: None
    • KIRIEIW
      No R3VLimiter
      • Dec 2012
      • 3385
      #2
      Jeez I should know this one but can't remember.. was the e34 harness your using from a auto trans.?


      1992 M tech 2 Convertible - S50 Swap
      1992 e34 Touring- S50 Swap
      1992 325i-S50 Swap (SOLD)
      1995 e36 M3 Mugello Red - S50 (SOLD)
      1991 325i Convertible Laguna Green (SOLD)
      1987 325i (SOLD);1992 M tech 2 Convertible (SOLD)
      1988 325i Convertible Alpine White (SOLD)
      1991       Brilliantrot Convertible 80k Miles (SOLD)
      1992 325i Convertible Schwarz (SOLD)
      1992 318i Convertible Project-Finished (SOLD)

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        • AndrewBird
          The Mad Scientist
          • Oct 2003
          • 11892
          #3
          Where do the wires lead to?

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            • radr
              Member
              • Oct 2016
              • 81
              #4
              I’m not sure if it was an auto E34. I found a thread on here mentioning the trans connectors are separate in the E34 but not 100% on that.

              The brown wires lead to the main ground (makes sense) and the others go into the mess of wires leading to the rest of the engine.
              '90 325is + S52

              sigpic

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                • radr
                  Member
                  • Oct 2016
                  • 81
                  #5
                  Did some more digging through the diagrams. I believe it's x6003 which is related to the auto trans. All the colors match up with an M50 A4S-310R car, the weird part is the diagram lists the connector as black, 8-pin when the one I'm holding is a black, 12-pin with only 8 of the pins filled. But I can trace all the pins back and they match x6003.
                  '90 325is + S52

                  sigpic

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