I just replaced my Horn on my Twingo.
It's a bumper off job as it's mounted just above the fog but below the main lamp unit.
There's a fairly large space where the washbottle neck goes down and I put a Twin Tone off another Renault in there.
The standard Nautilus horn on the Twingo is supposedly a LOW pitch :roll:
But it's tiny, so now I've got a twin unit, where each unit is bigger than the original. AND, they were THE SAME connector..well not quite.
Same shape and size, but if you connected it the "right way", Pos. went to Neg. and Neg. went to Pos. = No Worky.
5 Minutes and a hot knife later, lugs cut off and mounted the "Wrong Way", now it works perfectly.
I'll put pics up soon once I make my progress thread.