Welcome aboard!!

The entire puddle light needs to be replaced. Al of a sudden it was hanging from the side view mirror. The plastic encasement split. I think the light work and the translucent part of the fixture on the bottom of the piece still work.
Since you said it might not be able to be bought separately, I can try crazy
glue to put it together and hope the light bulb and fixture still work. I looked in the Ford Motor Parts site on line and didn't find anything.
I will also check out a junkyard and people who sell spare parts. I'm on the southern Mexican Caribbean so I don't have the access I would have in the US.
Thank you for your comment.
Susan
Are you talking about the lens for the puddle light on the bottom of the mirror?
As far as I know, the lens cannot be purchased separately. There are some threads about people making them out of CD cases. Maybe try the junk yard for a smashed mirror that has a good lens. That way they shouldn't charge too much!
Good luck with the hunt!
Please keep us posted as feedback helps others reading this post looking for a fix to the same or similar issue!