Good evening u can so what I did when I found out my sun roof over flow was clogged I went to Wal-mart and picked up a bicycles brake line cable they have a pack with assorted lengths . I took the out side plastic hosing off cut it about a foot long . And opend the sun roof found the drain hose in the right hand side slid the out side liner in the hose then installed the metal cable in after about 6 minutes ot was un clogged .