cowl water holes

[terry]

My 36 has these holes just behind the windshield in each corner. They go down under the dash forming a nipple about 1'' long for attachment of a drain tube. I reamed them out so water can pass through. My question is, where do the tubes go that attach to the nipples?... Behind the kick panels?, and is there another nipple behind the base of each panel? Don't want to take the panels off until someone can tell me where the water is supposed to end up. Terry