Glad they arrived safe and sound and your pleased with them.
I believe its a 13mm (could be wrong) to remove the little plastic "nuts" that screw onto the tail lights' "posts". Its very simple to remove and reinstall them. Should only take you about 10 minutes total time.
If you have the Kicker system your going to need to remove the torx bolt from the mount that holds the amp/sub in place. Its locatted up top and on the quarter panel. I can't remember which size of torx but you'll need to remove that to gain access to removeing the driver side tail light.