Technical Horn wires

[DIZI]

Hi, have managed to shoehorn twin horns under the bonnet of our new (to us) 500X - we're keeping the original horn (as we've done in all our other Fiats) but we need to find the green/white (probably) horn wire(s). Please, does anyone know its route so we don't have to unwrap every single wiring bundle to find it/them?

 

[s130]

Suggest you start at the existing horn and feed from there. Much easier than trying to locate elsewhere in the cable looms around the engine bay.