wiring horn button on k11 with airbag

[MicraItaly]

I have a sabelt steering wheel on OMP hub boss kit, how can i wire the horn button? one little cable is from the HUB, and it's connected to the current sparco horn button.
to make it work, i must take the other cable from the yellow loom that was connected to the original nissan HUB boss?


(i hope you understand, I'm not very good on english)

 

[pollyp]

one goes on the horn button and the other goes on the steering metal frame. when pressed, the horn button touches the steering frame to complete the circuit and sound the horn.