This is the MK2 Ka based on the fiat 500 not the original.

The later MK1 Ka's had a panel on the wheel arch liner that could be removed to acess the headlight, you could check for this.

Alternatively go to a ford garage and ask them but dont get them to do it

If you are still stuck in a couple of days i can check out my parents Mk2 and see if i can work it out.