im also intested in this, do those 'belle' or woteva they are called 'dualtone' horns from halfords work with the feistas single tone horn wiring? i was gunna buy 1 for my opel manta a while back but opted for the dual air horns instead
the ones they do in halfords are suposedly dual tone for the same size unit as a single tone????
I've also heard that the Mk1 Focus horn is a straight swap also. I think that DAVE T ST on here was thinking of doing this at one point, not sure if he did to confirm that this is possible?
best laugh is the mark 2 3 and 4 xr2 used to have a dual tone horn as standard so why the hell don,t the currant st have it aswell......oh hang on of course its ford saving pennies again a performance car with a poxy crap horn.