water leaking into trunk

If you haven't done it before, start at the bottom. Hose down the tail light area only. If no leak, move up to the lower corner of the trunk lid. Still no water move up to the top of the trunk lid. Then just the lower corner of the rear window, then bottom of rear window, then half way up the side of the window, then upper corner, then the top of the window. Be sure to spend enough time at each location to make a good determination.
If it is, in fact coming from the tail light area I was able to get a good seal there with some thicker and wider foam tape I got at Ace Hardware.
C