Turns out, the directions are in the user's manual! But, since I didn't look there, and to save others from having to look it up, here's how to do it (for a 2004 525i):
how to replace the license plate bulb on a 2004 Honda cr-v
how do you replace a honda crv licence plate bulb on a 2004
Remove the screws from the lens covering the bulb, pull out the bulb and replace it.
how do i remove and replace my fog lamp bulbs on my 2006 bmw 525i
I have a 94 not sure if they are the same but behind the license plate was mine Good luck Answer Improvement (Sept 5. 2010) Remove 4 license plate screws and licence plate Remove 4 hex head screws that hold the license plate/backup light assembly Rotate the license plate/backup light assembly around 180 degrees so you can get to the light bulb holders Carefully turn bulb holders 1/4 and remove bulb holder Carefully remove old bulb and replace with new bulb (#194) Reverse these step to reassemble
You need to unscrew the whole cover panel for license plate.
Ask your car dealer...
You need a torx screwdriver....
you buy a new one
Raise the trunk lid...you will see the lights on each side of the license plate...use Phillips screw driver to remove and replace bulb. Just did this takes about 2 minutes.
License plate like bulb, on a Citrogen Picasso, can be changed by pushing the bulb in and turning at the same time. The bulb will come out. Insert the new bulb.
unbolt lens, remove bulb socket quarter turn