I posted this a few years ago so apologise to anyone who has seen this
already.
I put up with this intermittent horn problem for a few years but after
adopting the following
rather inelegant solution about 20 years ago the horns have worked perfectly
ever since.
First I made a new plunger thingy for the steering wheel boss.. Took the
carbon rod from a dry battery
which fitted well into the barrel of an old pen of correct diameter. Took a
very light compression spring, same one from the old ballpoint, I think. Cut
two pieces 10 mm or so from the carbon rod and glued them to the spring.
They fitted into a piece of the ballpoint barrel cut to the appropriate
length.
Voila! A new plunger thingy.
Next I ground the teeth off an old hacksaw blade and bolted a suitable
length of it to the master cylinders bracket so that the flat bore down on
the upper part of the steering column.
Encore Voila! A perfect earth. No need to fiddle with bits of wire over the
UJ's or steering rack.
HTH, ATB
David Brister, 1967 TR4A (now in it's 29th year with me, and like me feeling
it's age.)
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