I have an 02 discovery II SE. I have two water leaks when raining and I have not figured out where they are coming from. The first is dripping into the passenger side floor board. It is dripping onto the top and middle of the floorboard floor mat. Frame weld leak? or windshield not sealed properly?


The second leak is coming in on the passenger side seat belt assembly where the belt comes out just below the head board. Could this be coming from the sun roof somehow?

 

Sunroof is probable suspect for both, though a leaking windshield gasket is less common, it does happen.
You are going to need to drop the headliner and address the issue...could be just a clogged/broken drain tube

 

also check the caulking in the roof gutter there was a TSB on that

 

Yes, check your drain tubes, it might need cleaning or replacement. If you're able to locate where the leak is coming from, there's windshield adhesive for that. Your truck will be vulnerable to rust, so i suggest you try to keep it in a dry space while the leaks aren't fixed yet.