Air Horn

[gmfryer]

I have a non functioning air horn. I replaced the relay I found behind the front cabinets and have verified that I have 12v going to it when I press the horn button. I can only assume that I have no AIR getting to the relay, does anyone know how the air line runs or if there are any other components in the system on a '99 36 FDS coach?

Thanks

[Algoma]

The air line comes from a manifold that feeds the front air bags. It is on the rear of the bulkhead near the generator. If you disconnect the air line at the solenoid you should be able to tell if air is getting there. Has it ever worked? When I bought my coach I discovered the previous owner had disconnected the air line at the manifold rather than fix the broken solenoid.

[gmfryer]

Yes, it did work once upon a time. I will check the manifold next time I air up.
Thanks