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Oct 6, 2008, 09:47 PM
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#1
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Evolved Member
Personal Sales Rating: ( 56)
Join Date: Aug 2005
Location: MA
Posts: 1,039
Drives: 04 EVO VIII, 06 Audi A4
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Horn fuse blows when horn is depressed.
So my horn stopped working, check the fuse, it's blown. Replace the fuse, turn the car on, inspect the fuse and it's fine. Honk the horn, hear a click and the fuse blows.
I thought it might have been the horns so I replaced them and that didn't solve my problem.
I know everyone naturally assumes its the interior drivers side harness but thats in perfect shape AND I spliced the wires anyway even though those wires are only the horn trigger wires and don't involve power.
From all the diagrams I've read, the trigger goes into the fuse box to the relay then branches out to the two horns via 2 red/black wires. I thought it could be the female end connectors so I removed them and added new ones and the problem still occurs.
Anyone have any idea what could cause this?
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Oct 7, 2008, 01:21 PM
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#2
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Evolved Member
Personal Sales Rating: ( 28)
Join Date: Apr 2007
Location: Newport News,VA; Kansas
Posts: 1,195
Drives: 06 IX MR
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wiring between the relay and horns grounded/shorted?
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Oct 7, 2008, 02:13 PM
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#3
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Personal Sales Rating: ( 56)
Join Date: Aug 2005
Location: MA
Posts: 1,039
Drives: 04 EVO VIII, 06 Audi A4
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Quote:
Originally Posted by biggie5252
wiring between the relay and horns grounded/shorted?
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That's what I've concluded. I'm not interested in tearing up the harness so I've decided to just run a seperate relay because I can't check to see if anything is shorting under the fuse box where it connects tot he relay.
Seems like this is an isolated incident but I posted to see if anyone else had similar problems.
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Oct 7, 2008, 02:42 PM
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#4
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Evolved Member
Personal Sales Rating: ( 28)
Join Date: Apr 2007
Location: Newport News,VA; Kansas
Posts: 1,195
Drives: 06 IX MR
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Good luck!
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Oct 7, 2008, 03:55 PM
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#5
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Evolving Member
Personal Sales Rating: ( 9)
Join Date: Jul 2007
Location: SoCal
Posts: 457
Drives: 06 IX
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yeah, sounds like a short near the relay somewhere. Check the grounds and trace the wires....those jobs are always fun.
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Oct 7, 2008, 06:54 PM
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#6
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Evolved Member
Personal Sales Rating: ( 56)
Join Date: Aug 2005
Location: MA
Posts: 1,039
Drives: 04 EVO VIII, 06 Audi A4
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Quote:
Originally Posted by BenJ
yeah, sounds like a short near the relay somewhere. Check the grounds and trace the wires....those jobs are always fun.
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Not worth it, just rewired using a new relay and good as new!
Thanks for the confirmation guys 
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Oct 13, 2008, 05:35 PM
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#7
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Newbie
Personal Sales Rating: ( 1)
Join Date: Sep 2008
Location: ca
Posts: 49
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did you replace your steering wheel? if so the horn lead could be flopping around and causing the short.
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Oct 13, 2008, 06:11 PM
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#8
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Evolved Member
Personal Sales Rating: ( 56)
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Location: MA
Posts: 1,039
Drives: 04 EVO VIII, 06 Audi A4
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That wouldn't cause the fuse to blow, it would just cause the horn to constantly go off. The problem was from the horn relay to the horn which doesn't seem to be a popular incident.
I just ran a new relay/wiring and everythings peachy keene.
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