Looking at where the water is getting in the most likely culprit is the vertical and forward horizontal seal, it seems they are often not reseated when the roof is removed.
The rear window corner also is really rotten, but the water gets in just behind the door.
This morning while looking around the canopy to see what seals were in place, I saw the typical signs of an unloved, and owned by less than considerate owners, car.
Various and missing fasteners.
While investigating, I found this little plate, different fasteners again..... Phillips screw and 7mm hex head screw.
Question is, what is it for??
Weird little connector. But where to clip it in?
Does it possibly power this interior light for the canopy??
Constantly getting to know this Blazer more and more intimately, just some stuff seems weird.
Later.