To wire a robot in CAD can be extremely time consuming with a very low cost benefit analysis in my opinion. If you use the 2010 or 2011 Inventors there help files and tutorials are more straight forwards.
Basically to make wire you make a new "wire harness" then inside the wire harness you add wires between the points (connectors) you want the wire to be. Then you have to take the straight wire created and add points to curve the wire around to not pass through anything.
Doing this for your entire robot is extremely computer resource hungry and the easiest way to make Inventor crash/lockup.
Our CAD from 2010 can be seen on the Autodesk design showcase at
http://students.autodesk.com/?nd=sho...0&jid=1914 13