Water in the trunk isn't coming from the windshield, maybe the back light .

I've found some with the drain tube in the fuel filler well loose, you have to remove the tank firewall to see, then it's a very simple thing to correct .

The rubber drains in the trunk floor are beginning to age out and crumble, luckily they're the same as some W124's and maybe W126's ~ I simply took a dead one into the junkyard and matched up the hole size .

Remember : you'll have to keep this rubber clean of oil as well as gravel, leaves or any other debris or the water will just puddle up and never drain out .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better