How do you replace a coil pack on a fiesta finesse?

To replace a coil pack on a Ford Fiesta Finesse, first ensure the engine is off and cool. Disconnect the negative battery terminal, then locate the coil pack on the engine. Unplug the electrical connector and remove the mounting bolts securing the coil pack. Replace it with the new coil pack, reattach the connector, and secure it with the bolts before reconnecting the battery.