Where's the Best Place to Grab an RPM Signal?

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  • Lof8
    R3VLimited
    • Oct 2006
    • 2827
    #1

    Where's the Best Place to Grab an RPM Signal?

    I'm getting ready to install a shift light. I'm hoping there's a pin on the back of the cluster I can use for the rpm signal. Anyone know?
    Thanks

    Edit: 24v engine
    Last edited by Lof8; 03-29-2013, 01:34 PM.
    S50'd

    Originally posted by TDE30
    What is this faggy shit I have happened upon?
    Originally posted by slammin.e28
    I can always live in a M3. Can't M3 a house.
    Tags: None
    • deutschman
      R3V Elite
      • May 2008
      • 5958
      #2
      Coil
      sigpic
      "The bitterness of poor quality remains long after the sweetness of low price is forgotten."

        Comment

        • homegrone30
          E30 Fanatic
          • Jun 2007
          • 1449
          #3
          Originally posted by deutschman
          Coil

          Sent from my SPH-L710 using Tapatalk 2

            Comment

            • Lof8
              R3VLimited
              • Oct 2006
              • 2827
              #4
              The 24v engines have individual coils, won't that mess me up?
              S50'd

              Originally posted by TDE30
              What is this faggy shit I have happened upon?
              Originally posted by slammin.e28
              I can always live in a M3. Can't M3 a house.

                Comment

                • deutschman
                  R3V Elite
                  • May 2008
                  • 5958
                  #5
                  Hhhhmm not sure. Didnt see the "S50'd" at the bottom of the sig.
                  There is a tach output wire at the ECU. Check a ETM and find the right wire/pin at the ecu.
                  sigpic
                  "The bitterness of poor quality remains long after the sweetness of low price is forgotten."

                    Comment

                    • Gregs///M
                      Forum Sponsor
                      • Mar 2012
                      • 2459
                      #6
                      Black wire in blue connector behind cluster, or ECM, or diagnostic connector.
                      Owner - Bavarian Restoration
                      BMW and European Electronics Repair and Restoration
                      www.BavRest.com
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