I also thank you for the link.

I went out and looked again on my manual sliding rear windows on my 1995.

There are two small outside drains on the rear window lower weatherstripping.

I gently pressed a thin steel wire up into both of these outside drains but the wire would not continue up completely into the interior window slider groove.

Apparently on 1994-1995s at least
The water is supposed to drain to the right/left sides of the slider groove
and then out under black cover bars on each side
before liquid turns downward through the two weatherstrip drains.
This keeps you from fishing a wire through to check that a drain is open.