Never having had air horns, I'm wondering if there is a separate switch to operate them. PO said he dosn't know. If I press on the horn button the horn works but not the air horns.
thanks
Jim

Mine work with the center of steering wheel along with electric

No separate button. Both electric horns and air horns work off the steering wheel horn button on mine.

Nick

On our bus a dirt dauber wasp filled the airhorn up one time.

There is an electric air valve in the front where there is a lot of air lines. Chances are it is stuck or maybe there is a bunch of junk in the air horns, do you hear anything like air escaping when you push the horn button?

BTW, you have to have air pressure to operate right?

My wheel button operated both air and electric horns.