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Connector 101

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    Connector 101

    are all the connectors 87-91 325i m20b25 the same? (the round plug)
    i.e. are the pins all the same except some of the pins might or might not have plugs for airbag,abs,etc.
    thanks

    #2
    The connector then selves are the same but the Pins change threw the years. Some stay the same and in the same spots. But like with my m30 swap, I used an 86 325e harness with the round c101, It plugged right in and started right up in my 87 325is. But in my 88 325is I had to add 3 pins to the Engine harness side, and bridge 2 pins together. One main difference is 87 uses and external c104 plug by the ECU for the Fuel cut function of the OBC and the 88 up runs these wires threw the c101.
    85 325e 2.7 ITB'd stroker

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      #3
      well here is my dilema. 83 320i euro e30

      same square harness as 84 325e

      engine is an 89 325i with round plug

      anyone have schematics of these?

      i know the fuel pump and tach have a seperate plugs by the ECU


      fuck i dont know

      :(

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        #4
        I've got the c101 diagrams for an 85 318i, 87 325e, 88 325is, 89 325i, and 89 735i if they'd be any help to you.
        85 325e 2.7 ITB'd stroker

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