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    Grounds Please

    Hi just wondering if anyone has a wiring diagram of all the grounds under hood and inside the car and were they are located for the 87 325 ETA motor
    Sold-87 325
    BBS RK Wheels
    H&R Cup Kit
    E30 ///M3 Light up knob
    Clutch Stop
    ///M Roadster FloorMats
    Jim C Chip

    91 318is
    M50 Swap
    Headers
    UUC Underdrive pulleys
    K&N 3in Cone
    Jim C Chip
    Soon H&R Coilovers
    BBS RS

    #2
    Under the hood, Behind Left headlight on fender
    Passenger side strut tower
    Oil pan to Driver's side frame rail
    Those are the major ones, then in the car, there is a main one under the steering column. For details you'll need to get an ETM.
    85 325e 2.7 ITB'd stroker

    Comment


      #3
      Originally posted by rs4pro3
      Under the hood, Behind Left headlight on fender
      Passenger side strut tower
      Oil pan to Driver's side frame rail
      Those are the major ones, then in the car, there is a main one under the steering column. For details you'll need to get an ETM.
      Don't forget, he has an ETA so the main engine ground on the strut tower on an 'i' is actually under the intake manifold next to the diag connector on an ETA.

      On the older ETAs and cars with rubber alternator bushings there is also a ground strap from teh alternator to the engine block.

      James

      Comment


        #4
        ETM whats that also is the ground inside for the ECU because I need to check the grounds to that too
        Sold-87 325
        BBS RK Wheels
        H&R Cup Kit
        E30 ///M3 Light up knob
        Clutch Stop
        ///M Roadster FloorMats
        Jim C Chip

        91 318is
        M50 Swap
        Headers
        UUC Underdrive pulleys
        K&N 3in Cone
        Jim C Chip
        Soon H&R Coilovers
        BBS RS

        Comment


          #5
          NO ECU is grounded threw the engine harness to the block by the Diagnostic connector like stated. ETM is the factory Electrical trouble shooting manual, search on ebay or go into to your dealership to get a copy. It has wiring diagrams for every system along with where grounds and connectors are located.
          85 325e 2.7 ITB'd stroker

          Comment


            #6
            Originally posted by rs4pro3
            NO ECU is grounded threw the engine harness to the block by the Diagnostic connector like stated. ETM is the factory Electrical trouble shooting manual, search on ebay or go into to your dealership to get a copy. It has wiring diagrams for every system along with where grounds and connectors are located.
            If you read properly that's not what I said. I said the ground is not on the strut tower on ETAs it's on the intake manifold.

            The alternator ground is attached to the block.

            Check the Bentley if you don't beleive me, they are all listed there.

            James

            Comment


              #7
              I know, just stating it differently, it's grounded at the Diagnostic connector threw the intake manifold, to the block, then threw the block to the oil pan, then to the chassis frame rail.
              85 325e 2.7 ITB'd stroker

              Comment


                #8
                Originally posted by rs4pro3
                I know, just stating it differently, it's grounded at the Diagnostic connector threw the intake manifold, to the block, then threw the block to the oil pan, then to the chassis frame rail.
                Sorry I was actually reading your post differently. I thought you were saying that "No Ecu" was grounded like that rather than "No, the Ecu".

                Fucking internet, so easy to misread people.

                James

                Comment

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