http://www.usfirst.org/community/frc....aspx?id=10934
Download the Power Distribution Diagram.
http://forums.usfirst.org/showthread.php?t=11829&highlight=robot+signal+ligh t
Use 22AWG wire per the Q&A response.
Feel free to use whatever connector you'd like to plug into the 2 pin port on the Digital Sidecar.
Russ