Has this happen to me on my 90′. It was the drains behind the rear interior panel. There is a section where the sunroof drain ties into the rear window drain. there was debris and junk in there. cleaned it out and it was good to go. It was a 1/2″ or so orange line if that helps.
Reply To: Water Leakage Around Left Rear Windowchristopher2016-12-05T10:59:18-06:00