2023 Back Seat Radio Mounting

[bignic83]

Not sure what that is, but there is a rubber grommet under the floor in the passenger foot area. I was easily able to access that, then run the cable under the molding on the door sills, to the back where I have a distribution block. I think what you’re looking at is come kind of vent or something, and I believe there’s been a few guys that had a water leak at that site? (If I remember right). If that’s correct, I’d go with the grommet

There is also a grommet in the same spot on the driver's side of my '22.