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e to i swap no power

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    e to i swap no power

    I just swapped an 89 m20b25 that was running like a champ into my 86 that previously had an m20b27. I took the working battery out of my 318is and put it in the car. When I turn the key to the first position the radio will light up and so will everything else. When I turn it to the secondary position power cuts completely. I'm rather worried about this.

    I feel as though possibly my issue could be with some extra connectors coming off of the new harness inside the cabin that don't mate with connectors that are previously there. The wire colors are different and I'm very confused as to what they do. I've gone through my Bentley to no avail.

    These are the connectors from the new i harness.

    These are the connectors from the e car


    I'm at a loss and need this car up as I'm suppose to be selling it soon.
    1992 318ic

    #2
    Those connectors on the DME harness have nothing to do with the power cut that is occuring when you turn the switch from accessory to ignition. The ignition switch could be bad or there could be a problem with the "Hot in Run and Start" circuits.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

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      #3
      Ends up my battery ground was corroded all to hell. I replaced it and now all is good. This car is a beast.
      1992 318ic

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        #4
        :up:
        AWD > RWD

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          #5
          That will do it! same thing when I swapped a 325i motor into one of my ETAs a long time back. Just made up a brand new one from 12ga amp wiring.
          ~ Puch Cafe. ~ Do business? feedback ~ Check out my leather company ~

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