I got new headlights that came with those connectors and was not able to use them,
this was too small and would not fit in my header panel. I had to use the adjusters out of the old lights.
If you want to remove the whole adjuster, just twist it at the base with a pair of pliers and it'll pop out. Once you remove them from the light, you can remove it with a screwdriver and a pair of pliers