Well a few weeks ago my horn on my 90 f150 was sounding really weird and very quiet... I chose barely hear it in the cab

Now it doesn't work and only makes a clicking sound near the passenger side it the dash

Any fixes?

 

Probably a bad ground for the horn, the clicking you hear is the relay. Take the horn out and clean up the connections. If you want a louder horn you could try finding an after market one, my air horn gets my point across very well.

 

While your at it, it's very worth while to move your horns to the center radiator support. Use the existing horn bracket and wiring and a self tapping screw to mount the horn bracket. Much louder and easier to get to in the future.