You cannot replace the "light" in the part with the Bird on it. That is a sealed unit, with 20 LEDs inside. Search thru the forums, and you will find a bunch of info. that I have written, including the Tech Article on the subject, in the Exterior section
Steve - TCCoA member
2003 Crown Vic LX Sport
1995 T-Bird LX 4.6 retired at 247,888 miles
Thanks for the ride !