I think I have this solved. This appears to be a ground issue.
Continuity between switch and motor: Good
Between SBJ and motor: Good
Between switch and SBJ: Good
Ground between motor and switch: None
Other grounds and power wires: 12+volts
Now correct me if I am wrong, but the 1205 BK (black) ground wire leading from the master RF switch to the RF motor should show continuity, and since it does not the switch cannot complete a circuit, thus the motor is receiving no current to tell it what to do. Voltage between the ground wire and power wire on both the window motor and the switch produce 12+ volts, so can we assume their individual connection to the G204 ground is good but the connection between the two is bad. This 1205 BK wire does not run through the SBJ so I am operating under the presumption that is a relatively short wire as the G204 ground connection lies under the pillar in the LH foot well. This connection should be a simple wire-eyelet bolted to the frame/firewall correct?
If this IS correct where is S215 junction so I can check the connections. I don't see any literature in the wiring diagrams addressing this. If no one knows I can probably track the wires back to this splitter. Thank you for reading.