[6pack] Horn issues

[Dave More]

I'm currently going through a similar type of issue. In my case, when the
horns work they work very well, and then at other times they don't work at all
or jus a very pathetic bleep. The relay is working properly and I've confirmed
voltage at the horns of ~12V. Suspecting a ground issue I found a "bulleted
ground" which appears to also service the LF side parking light. An ohmmeter
showed a high resistance so I changed out the bullet connectors and cleaned up
the female connector, and after doing so the horns worked great .. for a
while. Now I'm back to the same situation as before, however I find that if I
wiggle the wiring harness below the headlight and to the left of the rad the
horns come to life. I guess it's feasible that a ground wire could be broken
inside the harness but I don't really understand how that could be.

So my next step now is to run a ground wire directly from the hor's ground
terminal to a known good body ground. If that works then it's a definite
pointer to a wiring ground issue, but given the crucial nature of the horns in
our cars I'll probably leave the new ground in place.

Cheers,
Dave

On 2012-07-07, at 12:21 PM, davgil at aol.com wrote:

> I am trying to troubleshoot weak or no sound from the horns on my very
stock
> 1976 TR6.  My shop manual describes an adjustment procedure, but I don't
> believe that adjustment is my problem (and as usual, my horns don't have
the
> described adjustment screw).  I am getting approximately 6 volts at the
horn
> connection.  I suspect that I have some corrosion issue or a failing relay,
> but before I contine to scuttle downj useless paths, I wanted to determine
if
> 6v was the proper voltage at the horns.  As I continued to press and
release
> the horn button, I got more response from the horns as if something was
> gradually releasing, but then blew the fuse.  I looked in the archives, but
> did not find this specific information.  If someone has experience in this
> area, I would appreciate it.
> Regards,
> David Gill
> 1976 TR6
>
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