"middle" brake light bulbs wont turn on, e30

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  • Afredo
    Grease Monkey
    • Oct 2010
    • 349

    #1

    "middle" brake light bulbs wont turn on, e30

    1989 325i coupe. the "middle" brake light on both sides stopped working; replaced both bulbs, 5008's, still not working. does this mean the circuit somehow burned out on BOTH sides for the same bulb in the bulb "housings"? i feel like this is highly unlikely. help!
    "Once more into the fray."
    sigpic
  • MR 325
    Moderator
    • Oct 2003
    • 37825

    #2
    What do you mean?

    On late model E30s there are 3 brake light bulbs. One in each tailight (on the outside closest to the turn signal) and one in the center mounted 3rd brake light.
    BimmerHeads
    Classic BMW Specialists
    Santa Clarita, CA

    www.BimmerHeads.com

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    • Afredo
      Grease Monkey
      • Oct 2010
      • 349

      #3
      Originally posted by MR 325
      What do you mean?

      On late model E30s there are 3 brake light bulbs. One in each tailight (on the outside closest to the turn signal) and one in the center mounted 3rd brake light.
      there are 4 bulbs in each housing. 3 appear to be the same size and the 4th smaller, type 5008 bulb. the 5008 bulb is a brake light bulb and neither side works. I need to know if there is a fix for this or if I need to replace the housings.
      "Once more into the fray."
      sigpic

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      • MR 325
        Moderator
        • Oct 2003
        • 37825

        #4
        Originally posted by Afredo
        there are 4 bulbs in each housing. 3 appear to be the same size and the 4th smaller, type 5008 bulb. the 5008 bulb is a brake light bulb and neither side works. I need to know if there is a fix for this or if I need to replace the housings.
        Sure there are 4 bulbs in each housing.

        1. Blinker
        2. Brake light
        3. Running light
        4. Reverse light

        There is only ONE brake light bulb in each tail light.
        BimmerHeads
        Classic BMW Specialists
        Santa Clarita, CA

        www.BimmerHeads.com

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        • Afredo
          Grease Monkey
          • Oct 2010
          • 349

          #5
          Originally posted by MR 325
          Sure there are 4 bulbs in each housing.

          1. Blinker
          2. Brake light
          3. Running light
          4. Reverse light

          There is only ONE brake light bulb in each tail light.
          that's bizarre then, because when i have the brake pedal depressed, both sides light up, but the check panel still says there is a problem with the brake lights. does this include the 3rd upper brakelight as well? i didnt think to check that.
          "Once more into the fray."
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          • gearheadE30
            No R3VLimiter
            • Jun 2007
            • 3734

            #6
            The third light would do it. Also, I forget which does it, but either the brass or the silver base bulbs is also known to cause the check light to turn on because they have a different resistance.

            Project M42 Turbo

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