M50 Wiring Help, differnce in 85 and 91 fuse boxes?

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  • M50B25E30
    Noobie
    • Feb 2016
    • 5

    #1

    M50 Wiring Help, differnce in 85 and 91 fuse boxes?

    So after doing the M50 swap in a late model e30 (1991) i went to replicate on a 1985 e30. Now that its coming to wiring i don't see how the connector is going to plug into the 1985 im not seeing one in the fuse box. after some research im seeing the fuse boxes are different. Can i swap out for a late model fuse box? any links or advice to steer me in the right direction?
  • FireFight
    E30 Fanatic
    • Mar 2012
    • 1367

    #2
    Are you talking about the round c101 plug?
    Early cars don't have that plug, there is a rectangle connector on the fender side of the fuse-box, that what you'll need to make an adapter for, that is what I did, no problems
    WTB:m60b40 in PNW
    Zachary Ripley

    85 318i M50B25tu.
    92 525it 5 speed.
    80 244gl (m60 prepping).

    Comment

    • FireFight
      E30 Fanatic
      • Mar 2012
      • 1367

      #3
      stole this picture

      This is what it looks like on e30s 83-late 85, 86 went to a round c101
      WTB:m60b40 in PNW
      Zachary Ripley

      85 318i M50B25tu.
      92 525it 5 speed.
      80 244gl (m60 prepping).

      Comment

      • sweet3
        Mod Crazy
        • Oct 2012
        • 749

        #4
        If you would like an adapter, I can get one made for you. I have those connectors in stock, so you don't have to send me yours.
        PNP Adapter Harness Wiring for M52TU, M54, S54, M60, M62, M62TU, S62, M50, S50, M52, S52 & MORE

        sigpic

        Comment

        • dirkvanraalte
          Noobie
          • Oct 2016
          • 20

          #5
          I think this connector is the same as the E21. I have the same issue but I believe wiring is quite simple. Biggest problems are when there are differences due to year and accesoires.

          This is what i gathered so far, don't take my word for it because mine isn't done yet.


          Comment

          • FireFight
            E30 Fanatic
            • Mar 2012
            • 1367

            #6
            the connector for a e21 is roughly the same shape but they are not the same
            WTB:m60b40 in PNW
            Zachary Ripley

            85 318i M50B25tu.
            92 525it 5 speed.
            80 244gl (m60 prepping).

            Comment

            • sweet3
              Mod Crazy
              • Oct 2012
              • 749

              #7
              E21 is different. You might be thinking of the e28
              PNP Adapter Harness Wiring for M52TU, M54, S54, M60, M62, M62TU, S62, M50, S50, M52, S52 & MORE

              sigpic

              Comment

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