Air horn and other air stuff.
I bought a 1997 Safari coach and it has air horns. They don't work, i believe i hear the compressor kick on when i first turn on the key and pressurize a small air tank and then shut off. However horn doesn't work. I also have a slide out stair cover that doesn't work with the switch, i notice what appears to be air hoses going to it as well. This is as much as i know. I am good with electrical stuff. I assume some sort of electric air valve opens when the horn is pressed sending air to the horns. Just don't know what this looks like or how to troubleshoot, i found a device with a couple wires going to it and like 6 air lines. One appears to come from am T fitting between the compressor and the tank. Is this the valve i am looking for or just a function or pressure cut off switch.
1988 Fleetwood Bounder on John Deere Chassis