Originally Posted by R.S.LOGAN
Have you also checked this in the comments ? " there is another bolt on the underside of the headlight and to remove it you have to get under the car (at least i had to on my 2004 ford focus wagon) "
Right here my good friend^, get under the car and on the inside of the fender you will find a 8MM bolt, then pull the light out a little bit and disconnect the plug, But that clip that is holding the bulb in is just hooked on a little plastic hook, if you push down a little and move it (IIRC) down.
I will add another write up to our (How-to Directory) on how to remove the headlight of a Ford focus? Or maybe I'll do one on how to take the whole front body apart.