On the mk4 the fogs are built into the headlights. If you want i will be taking my headlights out as i have the depl projector lights going on soon. I knkw a few tabs in the pas light are broken but everything else looks fine.
Ye as you say they ment to be in the middle of the light. Try and see if you have a bulb in there 1st also have a look if it has aprojector in there.