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    Thread: Horn fuse keeps blowing--WHY?

    1. Junior Member CGJet's Avatar
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      05-07-2011 04:19 PM #1
      Can anyone help me to trace why the horn fuse keeps blowing. No work has been done on the car recently to short it out. I have changed the fuse and followed the wiring as much as I visibly can and I don't see anything fishy.

      Can anyone help???

    2. Member ps2375's Avatar
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      05-07-2011 04:25 PM #2
      Obviously it has a short in the ckt. Pull the fuse and test the power wire at the horn for a ground. Also check in the Bently manual to see if it has a relay, could be a bad relay.
      Tradition is the art of making the same mistake repeatedly, on purpose.

      FS:MkI low back front seat upholstery(new)

    3. Member saps's Avatar
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      05-07-2011 06:08 PM #3
      Short to ground, meaning the power wire is directly touching a ground wire or chassis ground.

    4. Junior Member CGJet's Avatar
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      05-07-2011 06:55 PM #4
      Sorry but what do you mean "short in the ckt"? What is that?

    5. Junior Member CGJet's Avatar
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      05-07-2011 06:57 PM #5
      Quote Originally Posted by saps View Post
      Short to ground, meaning the power wire is directly touching a ground wire or chassis ground.
      Any idea where to start looking for this power touching a ground wire or chassis ground?

    6. Member ps2375's Avatar
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      05-07-2011 07:44 PM #6
      Quote Originally Posted by CGJet View Post
      "short in the ckt"?
      It means you have a short in the circuit, where power is going to ground w/o going to the load. "Short circuiting the load". I would start at the horns, check them for resistance, one of them could be bad, then ohm the power lead to the horns. If all this still means nothing to you, you may have to have someone familiar with trouble--shooting a DC circuit help you or do it. A Bently manual will be a big help for the wiring diagram. But if the "short" is readily found, it could be buried in the dash steering column or engine compartment. GL
      Tradition is the art of making the same mistake repeatedly, on purpose.

      FS:MkI low back front seat upholstery(new)

    7. Member 16plus4v's Avatar
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      05-07-2011 07:53 PM #7
      How is this a 1.8t "specific" tech related issue ?
      2015 GTI Autobahn - White

    8. Member ps2375's Avatar
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      05-07-2011 07:55 PM #8
      must be on a car with a 1.8t motor. might get more interest/help in the mkIV Jetta forum.
      Tradition is the art of making the same mistake repeatedly, on purpose.

      FS:MkI low back front seat upholstery(new)

    9. Member 16plus4v's Avatar
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      05-07-2011 07:59 PM #9
      Quote Originally Posted by ps2375 View Post
      must be on a car with a 1.8t motor. might get more interest/help in the mkIV Jetta forum.
      Thats what I'm hinting.

      Its like this 1.8t forum has turned into a freaking "HELP ME" and "I DONT KNOW ENOUGH TO BE WORKING ON MY OWN CAR" forum..FML..
      2015 GTI Autobahn - White

    10. Junior Member CGJet's Avatar
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      05-07-2011 08:06 PM #10
      Quote Originally Posted by ps2375 View Post
      It means you have a short in the circuit, where power is going to ground w/o going to the load. "Short circuiting the load". I would start at the horns, check them for resistance, one of them could be bad, then ohm the power lead to the horns. If all this still means nothing to you, you may have to have someone familiar with trouble--shooting a DC circuit help you or do it. A Bently manual will be a big help for the wiring diagram. But if the "short" is readily found, it could be buried in the dash steering column or engine compartment. GL
      Thanks so much for the help. Sure someone will help you out when you're in a jam.

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      05-08-2011 06:30 AM #11
      our cars have horns?? If I want to get someone's attention, I just rev it and let the loud BOV whistle at them
      Sent from my Apple Newton.

      Quote Originally Posted by JoeyVR6 View Post
      you didn't get ripped off, you got out smarted.
      congratulations.
      Quote Originally Posted by Genuine Rolla
      The 1.8T is God's chariot. It runs on the tears of virgins.

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