hi, recently bought a mk2 ZT260 which is needing its 1st mot in january. the horn does not work. When it is pressed there is a live going to it and i can't get at it with a hammer! I have read spunagain's article on adding a high tone horn and since i will have to go to the trouble of removing the front bumper, i'd like to fit a two tone horn.

I have seen the stebel air horn on xpart shop, but as far as i am aware, an air horn would fail the mot.

Can anyone offer advice, part no's or confirm the stebel will pass?