HORN INOP

When you press the horn. It creates a earth. There is no positive power going to the horn.

Check that the horn connector is earthed. Just the bit on the steering column not the bit on the wheel
 

Ok the wire that goes to the horn button unplug it. You might have to remove the wheel or just pop the center horn button out if it does.
To find if a earth wire is earthed is just like finding a 12v wire but in reverse. Hook the red wire to something that has 12v and the black wire goes to what you are tiring to test.
 
Or you could just touch the wire coming out of the coloum to a metal part of the boss kit and the horn should go off.

Why dont you just systematically test the system. 
 
eg:
See if you are getting power at the horn when button pressed/wire earthed?
Unplug horn and supply direct power and earth to horn see if it works?
 
This way you can chase it back to see where the failure is.
 
Cheers
 

All, good think i sorted the issue, it was because everytime i tried the horn with the wire conected i had it sitting on the plastic tray instead of grounded to the chassis rail it is meant to be bolted to= not completing the circuit.

I will test this theory tommorow.

Redtarga,
the horn ring dosnt that earth to the little thing sticking out of the column and that keeps a constant touch on the ring even whilst turning, as on the ring it has a wear mark from the little knoby thing protruding from the column

but im getting power to the horn, because it causes te realy to click, and its not negative switching,

but the issue, was no power going to the horn, and the horn works as i tested that today, and it BEEPED ahaha!

But i realised i never had the horn grounded so it was never completing the circuit, which would explain why it was very intimitant because when i pulled the horn off the was very looose as the bolt was threaded in a few turns and the horn was just rattling around probably coming un grounded at some points.

i feel like such an idiot after spending many hours and frustration as to why this didnt work, and it looks like its was all because the horn was not grounded.. ahha

Thanks for everyones input, really appareciate it!

I wish i was.. i wish i was ahah.. 

whys that? 

Ahaha. sorry for the weird description, aha! :) 
thanks Red!