Hey guys, have a question and wanted to brag a bit

I've just finished changing the LEDs in my driver-side mirror. My car is way out of warranty and that mirror was really dim. I thought I was going to have to bake the housing open, but it turns out the reason they needed to be replaced was because the housing is cracked. As soon as I took it off of the mirror the clear lens fell away from the back.

Does anyone have any suggestions for what I should use to seal up the cracks (on the back piece, not the clear lens) and glue the two back together?

This was the first time I've ever soldered surface mount LEDs. My hands are kinda shaky and it was a b***h! This tutorial was crucial:
http://www.scionlife.com/forums/showthread.php?t=110698

I kinda forgot to take more than a few pics. It took me an hour to do the first one and the next three were pretty painless. Pro-tip: the two prongs on one side of the LED can be bridged, but the other two cannot.

Link to pics below. You can tell that the new LEDs are less yellow and more orange than the other mirror, but they won't be on at the same time much. I'm happy with it. I was originally thinking I would do both mirrors, but I almost ended up destroying the little PCB two separate times so now I'm thinking they can just be different!
https://www.dropbox.com/sh/2ky283ewq5an632/NLgoIYtRy9

Thanks to Ghozt and ChrisMan287 for answering a couple questions