Air horns not working

Not a clue. Come to think of it, the horns could be run off the onboard air compressor for your air bags suspension if you have that.

If not it would seem likely that the horns won't be too far away from the compressor to lessen time lag. Find the horns and follow the air lines. Good luck.

Any idea where I would find the air compression on that 37' 05 Newman?

Just make sure you are not making the same mistake I did. Had my motor home serviced. Just before I found the air horn did not work so I added that to the list of things to fix/repair. When I picked it up the service manager told me about the switch on the dash to turn the horn on/off. After owning the coach for six years was really embarrassed that I had forgotten about the switch because I never turned it off. I think.our 4 leg fury friend was the guilty one.

Mine would work intermittently. I just had them repaired at Alliance Coach and it was the solenoid was sticking. replaced the solenoid and all is well now!

Do you hear air going to them. IF so it is the horns. If not, it could be the actuator, or pinched hose

It's possible that if they don't get used a lot that the air pump seals are not working like they should. Try shooting a little lube into the air intake for the compressor and see if that helps.

Of course that's if you've checked to see if the compressor is actually running. If it's not running then you've got other problems and you'll have to trace down the culprit. Starting, of course, with the horn switch itself. Or could be the relay between the horn switch and the compressor, if there is one.

If the horn switch works and you are getting 12 V to the compressor and it still isn't working then you need to pull the compressor and troubleshoot it.