Okay so all fuses are okay and relays....however the actually relay "slot" for the horn does not trip the relay when inserted. (Which is how I tested the rest) so I'm puzzled to where the problem might be....
Also ... I crawled under the front just under the bumber (because I'm tinkering with the fog lights)
And I found a lonely male end harness dangling from the cluster of wires going to the horn and fog lights....
I added a picture of this harness ...and I CANNOT FOR THE LIFE OF ME find where this plugs into to...

 

Is there one horn, or two, under there? I think there is supposed to be two.....

 

There is two, almost touching

 

Are they both plugged in?

You can download a service manual from here. At the end of section 8W, is a list off all connectors, and where they are. Dig thru that, and see if you can identify it.

 

Totally found it thank you !