Bicycle Tutor

My computer is not displaying the rear gear positions as I shift my gears. What could be wrong and how do I fix it? If I need to check my connections on the right shift lever, please be specific as to how to do this.
Carl

http://techdocs.shimano.com/techdocs/index.jsp
Go to the "Other" section at the bottom and select Cycle Computers. They have the manuals there. Hope that helps