Download Fiam Horn Mod for Euro Truck Simulator 2 (1.43.x) This mod includes horn sounds recorded from real life truck horns. Works with Euro Truck Simulator 2 Version 1.43.x To activate this mod, go to service station and add the respective air horn addon to the roof grill. ADDONS INCLUDED 1. FIAM HORN These horn addons are compatible with any SCS trucks and mod trucks that employ SCS Horn addons.