[TR] TR4A horn

[Brian Kemp]

Assuming the TR4A is like a TR6, pull the horn button out and look at 
the plastic tube with the spring and braided wire.  It kind of looks 
like an old Bic pen.  Mine failed when the wire inside broke. Being 
cheap at the time, I replaced the braided wire with some solder wick.  
Now the parts vendors have reasonable replacements. You should also look 
at the back of the horn button to make sure the contact with the plastic 
tube is smooth and clean.  If not, clean it with a pencil eraser.

I have a related issue with my GT6 when I put a heavy load on the 
steering column, which makes the horn go off, without pushing the 
button.  For example, a 40 MPH tight sustained turn during spirited 
driving or at low speed when turning sharp, like backing out of a garage 
into a narrow alley.  My thought is that there is something in the 
steering column that is shorting to ground, triggering the horn relay 
and making the horn go off.

In my case, I suspect the steering column bushings are worn as the 
steering wheel has lots of side to side/up and down play.

I look forward to the other answers.

Brian

On 7/11/2018 6:24 PM, John Deluca wrote:
> My TR4A horn blows, but not consistently.  With the front wheels off the ground, holding the horn button down and turning the steering wheel stop to stop, horn blows but not continually.  There are dead spots where it doesn’t blow.  But the dead spots are not always at the same place.  Any ideas as to what is the cause?
> John DeLuca
>
> Sent from my iPad
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