wcf netnamedpipebinding example

I have a situation in which two wcf services are hosted in two different windows services on same machine & they want to communicate. i have created two projects. One, having wcf service in windows service with namedpipe binding & other, the same. only names are different. but when i set servicereference of one service to another, it installs the windows service but doesnt start it. the error log shows that there is no end point listening at the servie.