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Thread: Headlight fuse keeps popping.

  1. #1
    Join Date
    Jun 2008
    Location
    south africa
    Posts
    70

    Default Headlight fuse keeps popping.

    hi
    i just dont know what to do my number 10 fuse keeps poping (left lowbeam).the wiring is fine.it only happens when i switch the headlights on
    i open the lkm box and found there was a broke circuit i soldered it and put it back with a new 7.5 fuse switch the headlights on and it poped again.but why only the the no. 10 fuse keep blowing.

    help needed

    thanks

  2. #2
    Join Date
    Feb 2004
    Posts
    4,894

    Default

    Check bulb resistance. Leave that bulb disconnected and see if that pops the fuse too.

  3. #3
    Join Date
    Apr 2006
    Location
    Chicago, Il. U.S.A.
    Posts
    4,243

    Default

    That fuse is exclusively for that headlight and downstream of the LKM so faults there won't burn out the fuse.
    If you check the load side of the fuse socket I'm sure you'll find continuity(short) to ground.
    Reinspect your wiring and have a look at the bulb & socket for twisted/shorted terminals or corrosion.
    "The gas pedal wouldn't go to the floor if it weren't meant to be there"

  4. #4
    Join Date
    Jun 2008
    Location
    south africa
    Posts
    70

    Default

    okay i check that out and put a new bulb at the same time i also replaced the alternator regulator the output voltage is now 14.00 while car is idealing is that right

  5. #5
    Join Date
    Jun 2008
    Location
    south africa
    Posts
    70

    Default

    i found the problem why the fuse was poping the solder from the wires inside of the black cap on the back of the headlight was melted and it was touching the positive wire causing a short

  6. #6
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,265

    Default

    that fault is quite often, I even found one wire completely lose there.
    Looks like on some built years the wires inside that black cap were thinner, I have seen different diameters of wires there.
    Replaced them all again thicker wire, a bit difficult to solder in new wires due to limited space inside the cap.

  7. #7
    Join Date
    Jan 2007
    Location
    Dayton Ohio
    Posts
    1,483

    Default

    Any pics?

  8. #8
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,265

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