If you want to change the vanity/sun visor bulbs, remove the light unit itself first from the visor and do them. No wires attach these to the visor itself, just 2 metal contact strips.
They need a bit of force to remove and firm pressure to relocate.
Here's a link with some relevant pics:
Don't know if this has been discussed before but replaced my sun visors recently, assuming it would be very straightforward - unclip the plastic covers and remove the 2 screws holding the arms to the roof. Unfortunately the wiring behind the headlining has been glued in place (or at least the...