just change the bulb!
In the trunk there are what looks like black wing nuts unscrew them and the pull back the carpet and there you will find the light sockets
open trunk, remove the 4 wing nuts, remove the casing from the outside. Bulbs are in there.
The wing nuts are in the trunk to release the tail lite assembly.
On a 2003 Ford Crown Victoria : The trunk lid release button is on the drivers door trim panel
Open trunk, there are 4 wing nuts hold in the light casing. Once wing nuts removed, whole casing comes off from the outside.
It is on the left hinge of the trunk
Open the trunk take the plastic srew behind taillight out and move the pice of trunk rug out of the way. You should be able to see the back of the bulbs just turn them to left and they will come right out. (you did not say what year)
In the trunk side panels.
No. The trunk is to small.
On a 2000 Ford Crown Victoria : The fuel pump inertia switch ( shut off switch ) is in the trunk , behind the trunk liner on the drivers side ( there is an access hole )
On the left side of the trunk behind the trunk liner ( I assume there is an access hole )
Try looking in the trunk. Might find the sticker on the trunk arm inside.