I went out and took 2 pics on how to drop the glove box down. just push in on the sides were the rubber stops are and you will see the blower motor..
Here is the link. When you get there you will see trailer photos but the last 2 are the glove box and the blower motor that may be your best option to locate the clicking noise if the above problems are not the issue.Hope this helps.. Just click on the Photo to make them bigger.
http://community.webshots.com/album/556939487VdTPOV