I have a 1990 Honda Accord DX. Few months ago, I found that its trunk leaked. I caulked the tailgate light gasket. That fixed the leaking problem of the driver's side but the passenger side still leaked. I caulked it again, and eventually five times, to no avail. I knew a new gasket would not help. But just to be sure, I bought a new gasket from a Honda dealer to replace the old one. And, as I had expected, it did not help.
There are two indentations on the edge (right and left) of the trunk near the wheel. Now, when it rains, the right one is usually full of water.
Any idea where it might be leaking?