ive fitted my momo team and how can i get the horn working anyone doen one??

my horn has a black wire attached to the horn and the to the boss and a green and yellow wire on a loop so it seems but the skoda horn was from the plug?

any ideas please thanks

I fitted mine a long time ago, but as far as I remember it was just two spade connectors on the back of the button, nothing connects to the boss . . . . .