I don’t know much about advanced installations, admin images, etc, so I’ll just breeze through these for the CAD Admins out there, and we can get back to the good stuff. Check the SolidWorks 2014 What’s New document for all the details.
Chapter 4: Installation
Installing SolidWorks Electrical
SolidWorks Electrical used to come from a standalone installer. In SolidWorks 2014, it is included in the main Installation Manager. The SolidWorks IM allows you to choose where to install the Electrical client and server tools.
Environment Variables for Administrative Image Installation
Environment variables such as %ProgramFiles% and %SystemDrive% can be used to define file locations when customizing an Administrative Image.