There was an article in the Popular Mechanics.
Yeah found a link to it hope this helps.
http://www.popularmechanics.com/automotive/how_to/4252611.html
Try this...
http://www.autostyle.co.za/prodview.php?prod_id=19067%C0%03d=&cid=&pg=149&showall=&brandstr=&str=
Or just buy new ones