There are 4 drains. One in each corner. The two in the front go down the front windshield coner post. On my wagon, the rear go down just behind the rear doors. Don't know where they actually come out. The drain hose is about 1/2" i.d. clear tubing. Mine is somewhat darkend with age. You might try a coat hanger to clean them. They are in the four corners and come out on the sides almost perpindicular to the sides. Hope this helps.