M30 Part and Tube placement?Help me finish up

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  • Mastrcruse
    R3V Elite
    • Sep 2005
    • 5340

    #16
    I was thinking the same thing but there isn't anything left...well except the coolant sensor that is pictured..can't find the plug for it.

    This is connected to a relay. Stupid question but do relays get straight power from the battery? The relay that this connects to is named "main" on the PO's piece of tape.
    Last edited by Mastrcruse; 09-03-2008, 05:35 PM.

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    • speedhop
      E30 Mastermind
      • Aug 2006
      • 1509

      #17
      Are your alternator and starter hooked up?
      www.ryanwhopkins.com

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      • Mastrcruse
        R3V Elite
        • Sep 2005
        • 5340

        #18
        Yep starter and alternator are hooked up.

        Here is the bottom of that relay (shows the red as maybe a main power supply?). Its the one on the left relay (left in pic) and closest to the top of the pic

        The second picture shows the brown coming out between 2 main wiring clusters
        Attached Files

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        • Mastrcruse
          R3V Elite
          • Sep 2005
          • 5340

          #19
          up

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          • Mastrcruse
            R3V Elite
            • Sep 2005
            • 5340

            #20
            anyone have a clue where the "main" relay grounds and powers too?

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            • RickSloan
              R3VLimited
              • Feb 2008
              • 2401

              #21
              from the origonal picture it looks like they should go on your coil pack???

              Need Illustration or Design work? www.robbiebyerly.com

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              • Mastrcruse
                R3V Elite
                • Sep 2005
                • 5340

                #22
                Coil is set up. These are on the drivers side of the car where there are a cluster of 3 relays with a cover over them. I am looking at wiring diagrams and I can't seem to find something that shows 1 large red wire and 1 small red wire coming together. I dont' have my aux fan hooked up yet, maybe this is where these could go?

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                • wildstoats
                  E30 Modder
                  • Sep 2007
                  • 896

                  #23
                  I know this is an old thread but I just wanted to add to it in case anyone else brings this up in a search.

                  #4


                  Assuming this is a B34 then that is a crank sensor. However the only thing that sensor is used for on the B34 is for a BMW dealership diagnostic tool. If you trace the wire it goes back to the diagnostic port but doesn't go anywhere else. You can safely disconnect it. I actually just cut it off and removed the bracket entirely. Be careful though, on the B35 the sensor for the crank trigger wheel sits in exactly the same place and you definitely do need that one.
                  $500, Diamantschwarz, and a Dream

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                  • BDK
                    Mod Crazy
                    • Jul 2008
                    • 684

                    #24
                    ^^^ yep, he is correct cuz the B34 get's it's signal from the flywheel sensor and that is why later model 260's don't work on early b34s without mod as there is no opening for the sensor...

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                    • Spinning Tires
                      Wrencher
                      • Feb 2007
                      • 283

                      #25
                      I'd say those 2 wires go to the starter
                      First: 1984 318i
                      Second: 1987 325
                      Third: 1987 325is
                      Current: 1990 325i (Soon To Be 335i)

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