horn contact pin replacement
 

I've had a 1971 911T since new and still suffer from the need to replace the little spring loaded horn contact pin from time to time. This time however I am having a difficult time in keeping the contact pin in place while I place the horn contact button on the wheel. The horn contact button doesn't seem to want to engage properly . Is there a horn relay or horn witch involved? The steering wheel is the standard Porsche wheel.

Many thanks.