Here is the best I can do for you, it's a link to a forum where someone has given details of an 05 Tuscon. I doubt very much that the wiring would have changed between models.
http://www.the12volt.com/installbay/forum_posts.asp~TID~114297~PN~1#553130
You then match up the colours/purposes to the table you will have in the book for the CD Player.
It will be quite easy to do.
Alternatively, buy a harness/loom which will do the conversion for you.
If you need more help, then let me know somehow.. I'm not sure how this site works, as I've literally just stumbled across it looking for something else through Google, and figured I'd have a shot at answering your question.