DS SolidWorks has included electrical routing in their SolidWorks Premium package for a number of years now, but with the release of the new SolidWorks Electrical 3D software provides a number of features which really enhance the routing experience. The most substantial feature is the ability to define pathways for wires, cables and harnesses to run. This leaves out a lot of the ambiguous decisions that SolidWorks Routing Auto-route did in the past and can create a route path which is in line with your requirements.
To illustrate this key functionality I have created this quick video to highlight both the wire routing and cable routing functionality. I will leave the harness routing for a future post. Please let me know if you have any questions related to this functionality.