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Horn Problem

spooch22

Senior Member
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Any common problems with the tr6 horn? I'm a novice mechanic and can only check the obvious. Any ideas? I can't figure it out /ubbthreads/images/graemlins/confused.gif
 
What are the symptoms?

Do you get any sound (buzz, click)? Are you applying 12V directly to the horn to test or just using the horn button? Have you checked the fuse?
 
Spooch, all you need is about 5 feet of wire, and go directly from the battery to the hot side of the horn. An old lamp cord will work.
Jeff
 
spooch, if the horn sounds then you know there's a short of some nature between the horn button to the horn. I would bet a bad horn relay (cheap) or a loose ground connection (easy fix if you find it). Could even be the horn button but unless it's been hammered on or abused in some manner it's probably ok.
 
This could be an excellent opportunity to obtain a cheap multimeter and get the hang of tracing an electrical fault. In addition to the meter (less than 10 bucks at Harbor Freight, etc) you should have a wiring diagram. There is one here (follow links):

https://www.britishv8.org/techhome.htm

Looks like touching a jumper wire from the positive side of the battery to the connection on the horn that has a Purple/Yellow wire should test the horn. I always go in the house and tell my wife I'm going to do this before trying it.

If the horn honks then you can use a voltmeter/multimeter to find where the current path is failing... fuse, relay, horn button or even grounds.

You might try wiggling the fuse a bit as they can look fine but not be making connection.

Electrics are dead easy once you get a feel for them and sooner or later (most likely both) you're going to get to sort them out on the road... in dark... while it's raining... etc.
 
George, I fixed my horn by improving the ground wires on the steering wheel. I was getting no ground. Usually, that would be my first suspect.

But, on my car, I sometimes (very rarely) still have delay or fleeting failure with the horn. When that happens, I notice a click or a buzz. Does that mean that the relay is going bad? What do you think is going wrong? I wouldn't suspect the ground after what I did, but who knows.
 
If you bypass the switch (ie connecting 12v directly to the horn) and the horn still doesn't work and just makes clicking or weak noises, it may just need to be adjusted. There is an adjustment screw on the horn itself that just requires a flathead screwdriver. I'll have to check my manual, but I believe that you adjust clockwise until you get a strong horn sound, then step back counterclockwise 1/4 turn and you're set. When I got my 6 the horns only clicked, and that was the solution. Work great now. /ubbthreads/images/graemlins/thumbsup.gif
 
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