Does anyone know if all the 2000 imprezas L come with with stock trunk lights? Mine doesn't have one.

SubaruWRXparts.com sells it as a kit for $35.
http://www.subaruwrxparts.com/gc8-interior.html

You might be able to find it in a junkyard for half that though. Just get the light and the switch on the latch striker plate.

all pre-02 imprezas(sedan & coupe) DID NOT come with trunk lights.
Buy the kit.. or just get a tap light