remove a plastic wing nut situated inside the boot area 'hidden' behind a small flap in the trim. then remove the 2 philips screws and the entire unit will pull away. release 6 clips, 3 down each side and 2 more clips, 1 at the top and 1 at the bottom and you'll gain access to the bulbs.
just two points to add to the above: The 2 screws* are situated between the inside of the light fitting and the rubber boot trim hence not inside the boot area.
*The philips screws are in fact star shapped screws and a philips bit damages them!
fiesta owner 2005, October 2009