My trunk has been filling up with water. Today, I discovered at least one source of the leak. On the driver's side of the trunk, there is this black plastic part, I could see water seeping in at the top and dripping into the left hand side well.
What is this part and what's the best way to repair the leak?
I am not sure if this is the only leak because I also had water in the spare tire well and the passenger side well (location of the jack) and I can't see how water worked its way to these other two compartments.
http://img22.imageshack.us/img22/9324/img5570c.jpg
http://img52.imageshack.us/img52/5444/img5567h.jpg