The ground link unit has the same 4pin connector that the Naza LED unit has. So: can I add a CAN hub to the ground unit and then plug in the Naza LED? I would love to see the LED status on the ground. I just discovered that even though the phantom has the LEDs on the arms, you can't always see them. I was flying at about 75 feet high just before sunset. I could not tell if the arm LED's were green or red. One time, I couldn't see that the LEDs had changed to red- until it started auto landing. Additionally, if this does work, I can hide the red LEDs that show up in the cameral during night flights.