You might try Scribd.com. You can do searches without joining. To download anything, you have to join, but you can get a 30-day free trial membership; just make sure you cancel before the 30-days is up, or they will charge the credit card you have to enter.
Thanks for checking. Are those catalogs the ones that go in-depth on their weaponlights? I found 2002 thanks to Timothybil but I'm still looking for 2003 and 2004, as well as 2001 and anything prior (with the exception of 1997).
I can't remember, but when you look them up on Scribd.com, it will show the front of the catalog. After you do the search, look in the "documents" listings, instead of "books".