The plot thickens!
Now you know why good info helps!
If the horn button is disconnected, you may as well piss on it, it will make no difference, however, check my other post for how my horn works. You may have had power to it all the time but it just now started to blow.
The obvious solution is to disconnect the horn but I can't help feeling that the dead short on my alternator instead of an open, when the horn is not blowing, must have a purpose.
It obviously loads the engine to generate power and then dump it to ground so is this protecting the alternator from developing too high a voltage when open cicuit?
Anyone out there know?