sometimes the taillights fill up with water because the gasket sealing
the unit ages-not the gasket between the unit and the car. Then when
they get about half full they pour out into the trunk.

sometimes, as my 92 coupe, the rear window gasket ages and shrinks and
then rain sneaks down inside the car and lends on the wheel arch behind
the trim panel and then lands in the area you describe.

Remove as much trim as you can and then climb in the trunk during a
rainstorm (from the passenger compartment, leave the seat lowered) and
see if you can see where it is coming from.

HTH
norman

John Smith wrote:

> 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?