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    #1

    i head swap help

    so i am finally done swapping everything from the i into my e vehicle just stumped on one last thing. The engine harness from the i has two connectors right next to the ecu plug. which are these.
    And then i have this connector on the chassis side harness.
    Now i believe this is for the ignition or something like that and just want to know which of the engine loom wires go to the chassis side. the vehicle is an 86 325e and the engine harness is from a 90 325i. thanks.
    Originally posted by TimKninja
    Racelands are cheap shit.
    Originally posted by whodwho
    So are r3v members
    Originally posted by Cabriolet
    dude, this is R3v. there's like 40 project threads, and like 20 FS threads and 100 members ride threads of stupid shit. guaranteed laughs on every page. cut springs, rolled cars at 20mph, fishtank heater core, selling broken stuff, painting cars with paint brush, cheap wings, hella-flush and then there is Vlad, king of the eta M3
    Tags: None
    #2
    The white body side plug provides the START signal to the DME, which tells the DME to run, and routes the tach and econometer signals from the DME to the cluster. Your late model harness won't have a matching connector because it routes those signals via C101. The easiest fix is to graft the matching connector from the old harness to the late model harness.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

    Comment

      #3
      http://www.r3vlimited.com/board/showthread.php?t=213404

      Closing SOON!
      "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

      Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

      Thanks for 10 years of fun!

      Comment

        #4
        Thanks for the info Luke. Appreciate it.
        Originally posted by TimKninja
        Racelands are cheap shit.
        Originally posted by whodwho
        So are r3v members
        Originally posted by Cabriolet
        dude, this is R3v. there's like 40 project threads, and like 20 FS threads and 100 members ride threads of stupid shit. guaranteed laughs on every page. cut springs, rolled cars at 20mph, fishtank heater core, selling broken stuff, painting cars with paint brush, cheap wings, hella-flush and then there is Vlad, king of the eta M3

        Comment

          #5
          Done?

          Closing SOON!
          "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

          Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

          Thanks for 10 years of fun!

          Comment

            #6
            So I got it turned on right now and it turned on like a charm. But the tach don't work. I think it's the cluster since the vehicle that it was on was parked for several years. Gonna swap it out and hope that works. Thanks to all for helping me get this thing up and running.
            Originally posted by TimKninja
            Racelands are cheap shit.
            Originally posted by whodwho
            So are r3v members
            Originally posted by Cabriolet
            dude, this is R3v. there's like 40 project threads, and like 20 FS threads and 100 members ride threads of stupid shit. guaranteed laughs on every page. cut springs, rolled cars at 20mph, fishtank heater core, selling broken stuff, painting cars with paint brush, cheap wings, hella-flush and then there is Vlad, king of the eta M3

            Comment

              #7
              Bad signal. Th tach should be the black wire in your glove-box and needs to go to the black wire on the ECU side (test continuity to pin #6 on the DME connector). Your tach will be useless above 5k RPM, keep that in mind.
              john@m20guru.com
              Links:
              Transaction feedback: Here, here and here. Thanks :D

              Comment

                #8
                Alright thanks man. Will check tommorrow as soon as I get out of work.
                Originally posted by TimKninja
                Racelands are cheap shit.
                Originally posted by whodwho
                So are r3v members
                Originally posted by Cabriolet
                dude, this is R3v. there's like 40 project threads, and like 20 FS threads and 100 members ride threads of stupid shit. guaranteed laughs on every page. cut springs, rolled cars at 20mph, fishtank heater core, selling broken stuff, painting cars with paint brush, cheap wings, hella-flush and then there is Vlad, king of the eta M3

                Comment

                  #9
                  Just an FYI to you and future swappers... If you had used an 87 M20B25 harness everything would have plugged in and worked perfectly including the tach.
                  BimmerHeads
                  Classic BMW Specialists
                  Santa Clarita, CA
                  www.BimmerHeads.com

                  Comment

                    #10
                    ^yeah, but what is the fun in that?

                    Closing SOON!
                    "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

                    Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

                    Thanks for 10 years of fun!

                    Comment

                      #11
                      Originally posted by MR 325 View Post
                      Just an FYI to you and future swappers... If you had used an 87 M20B25 harness everything would have plugged in and worked perfectly including the tach.
                      Not true. I have found there are 2 different harnesses, one doesn't play nice with the 173dme and needs to stay 153, otherwise you will get 12v at the TPS instead of 5v.

                      Also, the earlier harnesses don't have the convenient (and sometimes not convenient, lol) injector harness connector for ease of inj swaps.

                      Either way, how hard is it to tap 2 wires?
                      john@m20guru.com
                      Links:
                      Transaction feedback: Here, here and here. Thanks :D

                      Comment

                        #12
                        Originally posted by ForcedFirebird View Post
                        Not true. I have found there are 2 different harnesses, one doesn't play nice with the 173dme and needs to stay 153, otherwise you will get 12v at the TPS instead of 5v.
                        Hmm, I've yet to see this first hand and I've done i swaps in 4 early models or so.
                        BimmerHeads
                        Classic BMW Specialists
                        Santa Clarita, CA
                        www.BimmerHeads.com

                        Comment

                          #13
                          Sorry for the delay people but I got it working. Seems that the crimping I had done was not good enough. But it works now. Thanks to all.
                          Originally posted by TimKninja
                          Racelands are cheap shit.
                          Originally posted by whodwho
                          So are r3v members
                          Originally posted by Cabriolet
                          dude, this is R3v. there's like 40 project threads, and like 20 FS threads and 100 members ride threads of stupid shit. guaranteed laughs on every page. cut springs, rolled cars at 20mph, fishtank heater core, selling broken stuff, painting cars with paint brush, cheap wings, hella-flush and then there is Vlad, king of the eta M3

                          Comment

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