How do you change the horn on a 307 hdi?

To change the horn on a Peugeot 307 HDi, first, disconnect the car battery to ensure safety. Locate the horn, usually found behind the front grille or under the front bumper. Remove the mounting screws or clips holding the horn in place, then disconnect the wiring harness. Finally, install the new horn by reversing the process, ensuring it's securely mounted, and reconnect the battery.