RSD does have separate and different diagrams for installation of the instrument cluster and connectivity unit. The diagrams are not very interesting for this discussion though as they do not answer whether TFT aka connectivity is retrofittable. They simply show a different connection in the dash: there is a wire connecting the TFT to the dash frame and no wire for the traditional cluster.
What is interesting is that instructions/diagrams for removing/installing/replacing the main wiring harness ask whether your bike has D-ESA, keyless, navi, passenger package, RDC, DWA (alarm), and style 1, but do not need to know if you have connectivity. This suggests that the wiring harness is the same for connectivity option as for the traditional cluster.
