How do you stop the horn blowing on a 1992 Ford Falcon?

I had this on my 1994 Ford Fairmont (Australian) - turns out the horn pad in the center of the steering wheel is heald out from the contacts by some soft foam rubber, which breaks down after a while, so that the contacts are always touching. Step 1. pull the plugs out from the horns themselves to shut the thing up! Step 2. Get a new horn 'pad' (center of steering wheel) to replace the old one. Hope this helps.