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Tail light fuse keeps blowing

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    #1

    Tail light fuse keeps blowing

    Every time I turn the headlight dimmer switch so that the orange lights come on, the tail light fuse will blow almost immediately. I bought a new switch and put it and and drove around with the light on for about 15 minutes and everything seemed good. But while I was doing a burnout (first day I had my car in a month, give me a break) the fuse blew. I replaced the fuse and turned the knob back up. It blew before the dash lights even came on.

    Any ideas? This happen to a lot of people? I don't know what else to do since I already bought a new switch. Maybe it's the wrong fuse? I replaced it with a 30 because that's what was in there. Not much knowledge in the electrical side of cars.

    1989 Cadillac Brougham BLOWN UP
    2000 Volvo S70 GLT SE SOLD
    1987 Schwarz 325i 107k SOLD
    1984.5 Volvo 242 Ti ABANDONED
    1999 Fern Green M3 SOLD
    1991 RT4WD Civic Wagon WINTERWAGEN
    2004 Audi A4Q 3.0 WIFEY'S
    2009 BMW 135i SOLD
    2008 BMW 135i MINE
    Originally posted by JGood
    anyone who pays $200 for a tank that refills oil instead of just fixing your oil leak, needs their head examined.
    Tags: None
    #2
    I would say you might be grounding out. Time to trace the wires.
    i'lldoitforacaravan

    Comment

      #3
      I have the same problem. I had to cut the gray with red wire coming from the switch just to keep the tail lights on. I don't know what is wrong but assume there is a short in the panel lights. My rear side markers and plate lights are also out.
      For me it's fuse 23 that blows. and it should be a 7.5 amp fuse not 30.

      Comment

        #4
        Does anyone know where to look for the short? I checked the harness from the tail light forward to the point that it goes up under the dash.

        Comment

          #5
          Can you elaborate more on what you mean by "cut the gray with red wire coming from the switch." I have zero experience with car electronics.

          1989 Cadillac Brougham BLOWN UP
          2000 Volvo S70 GLT SE SOLD
          1987 Schwarz 325i 107k SOLD
          1984.5 Volvo 242 Ti ABANDONED
          1999 Fern Green M3 SOLD
          1991 RT4WD Civic Wagon WINTERWAGEN
          2004 Audi A4Q 3.0 WIFEY'S
          2009 BMW 135i SOLD
          2008 BMW 135i MINE
          Originally posted by JGood
          anyone who pays $200 for a tank that refills oil instead of just fixing your oil leak, needs their head examined.

          Comment

            #6
            I traced the short to somewhere in the dash by eliminating all the stuff in the back. In my car the gray wire with the red stripe feeds power to the dash lights as well as the rear side markers. I cut it far enough behind the switch that I can splice it back together after I find the short. This allowed the right tail light to work, but I have no dash lights for now.
            You need to trace your wiring. First figure out if it's the tail lights or the other stuff and continue to eliminate areas. This stuff is hard to do. You should probably find someone to help you. Most of it is hidden behind trim panels.

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