[RideWithDanger]

Kind of found out myself. So thanks to Gblaue, I learned the on this connector, the Red/Yellow and Black/White are power and ground. The other 3 sets are for the front door speakers, and one of the rear shelf speakers.

So, after a quick look at the easy to see rear shelf speakers I found the driver side rear shelf speaker is connected to the same harness, and found the right rear shelf speaker connected to the next harness over. Which left the front door speakers remaining. As of right now I do not know which is which, but I have made a quick diagram for the far right harness on the Bose amp for the 2019 3LT.

Colors:
Blue/white | Yellow | Blue | Red/yellow
Grn/black | Yell/blk | Blu/blk | Black/white

What they do:
Rear L Shelf Speaker + | Front door + | Front door + | Power
Rear L Shelf Speaker - | Front door - | Front door - | Ground

Also if your curious as to the passenger side rear shelf speaker, you can see the wires in the first picture as well. Those are the far right side wires to the next harness over. White/black is + and Green/purple is -