How do you replace a Ford Festiva headlamp assembly?

To replace a Ford Festiva headlamp assembly, first, open the hood and disconnect the battery to ensure safety. Remove the screws or clips securing the headlamp assembly, then gently pull the assembly forward to detach it from the vehicle. Disconnect the wiring harness from the back of the assembly, and attach the new headlamp assembly by reversing the removal steps. Finally, reconnect the battery and test the new headlamp to ensure it's functioning properly.