With difficulty! go in thru the wheel arch after removing the arch cover.
Not an easy job on the stilo .drivers side is not to bad but the passengers is a night mare..get advise from www.FS-OC.Net
Resubmit question with make, model and year of the vehicle.
On my ford aerostar I coudnt reach the bulb from behind so I had to remove the housing to get to the bulb. First the crome frame and then the headlight case. In the center of the headlight case is...
This depends totally and completely on the type of vehicle you are talking about. Ask again with more details and you will get a better answer.
On older vehicles you replace the entire headlight. On the newer vehicles you just replace the bulb unless the headlight assembly is damaged.