Do you mean at the operator interface, or on the robot?
None of the electronics at the operator interface are high current so you can use just about any type of small wire and connector (such as what Dan suggested).
On the robot is a different story. You might try looking at the Anderson's Power Products catalog that came in last year's kit. Another good place to look is Newark Electronics (
http://www.newark.com). You are able to request thier catalog online, or you can drive 2 hours south and pick up mine (its 1700+ pages and way to big to take on an airplane back to Rochester
)
I don't have any specific recomendations, but those are two good places to start searching for the right connector, and once you find it, let us know because I'm sure the are people on many other teams that would love to find the perfect connector.