Need HELP! Horn works in reverse!

[ppbon]

Originally Posted by jhbaik

Recently, I bought the 2nd hand '01 Boxster S. After finalizing all the deal, I enjoyed the car very much. Then, I realized something very strange.

When the key is out of ignition switch, horn works. If I put it into ignition switch and car starts, horn doesn't work?!! Very dangerous!!
It should work in reverse, right? Horn should work in driving!!
I thought the ignition switch was the problem, and I replaced it with new one. But, it didn't fix the problem. Does anyone know or have good guess on what happened? Thanks for your help in advance~! Happy boxstering!

John,

Hi John:
The only thing I can think of (other than the previous owner rewiring the horn) would be the electrical portion of the ignition switch.
This switch controls most of the electrical components in the car and when it starts to fail it can cause all sorts of gremlins.
The strange thing is that it generally causes more than one electrical symptom.
Do you have any other electrical issues?
Happy Boxstering,
Pedro