I recently have bought a 1981 FB and the first time I washed it I noticed water sitting in the groove underneath the rear glass. I saw a video describing where these channels are and how to clean them. I followed the tutorial and the left channel cleared easily. However, while attempting to clean the left one, I have seen no water dripping. I looked to find where the channel drains under the car but cannot find it. I hear water running and the drain no longer seems clogged but I can’t seem to find where it actually drains. Does it drain in a place I can’t see? Please respond if you know the location. Thanks everyone! -Mateo

 

the hoses go down to the rear panel and then out behind the bumper. if you look under the bumper you can see the holes

 

If you have access to any 8, or 10 gauge wire get a piece about 36" and run it gently down the hole that isn't draining, it should clear the blockage without damaging the drain tube.

 

Good advice here.

And you can peel back the interior carpet/trim from the inside of the hatch area to inspect the connection of the hose to the metal spigot. The original hose is a clear hose with a clamp to secure it. Probably much worse than a clogged drain tube... is if it is leaking into the interior of the shell!