no power to windows, blower motor fan, or sun roof

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  • e-dirtym52
    Grease Monkey
    • Aug 2012
    • 338

    #1

    no power to windows, blower motor fan, or sun roof

    I just swapped out wiring harnesses for my m52 in my e30 after having issues with my first one. Just pulled it out of the garage today to find out I can't roll my windows down or my sun roof. Went to just blow air through my vents and no power there either. But my clock, radio and everything on my dash works fine. Tried to check the powers and grounds but couldn't find anything irregular. Any suggestions??
    If you're not going to do it right, please don't take it out on your car!
  • reelizmpro
    R3V OG
    • Dec 2003
    • 9458

    #2
    Check your starter wiring. I had the top wire break at the connector
    "I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj

    85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
    88 M3 - LACHSSILBER/SCHWARZE
    89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
    91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER

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    • jlevie
      R3V OG
      • Nov 2006
      • 13530

      #3
      That sounds like the unloader relays aren't engaging. Which would mean that the unloader control wire from the engine harness isn't connected the unloader switch in the starter solenoid or that the unloader switch is bad.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

      Comment

      • e-dirtym52
        Grease Monkey
        • Aug 2012
        • 338

        #4
        Which ones the unloader switch?
        If you're not going to do it right, please don't take it out on your car!

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