How do you replace main fuse box on Ford Festiva?

To replace the main fuse box on a Ford Festiva, first disconnect the negative battery terminal to prevent any electrical short circuits. Remove the screws or clips securing the fuse box to the vehicle, then carefully disconnect the wiring harnesses attached to it. Install the new fuse box by reconnecting the wiring harnesses and securing it with screws or clips, and finally, reconnect the negative battery terminal to complete the installation. Always consult the vehicle's service manual for specific instructions and safety precautions.