Hi Ed,
If you have the Data Interoperability extension, there is a transformer called "Intersector" there. This transformer uses a line geometry as the input and produces two outputs. One, a line split at intersections (useful when your data is not segmented this way) and two, nodes for each intersection. If you don't have the extension, and your data is already segmented at intersections, you can use the "Feature Vertices To Points" geoprocessing tool. This tool will be a little trickier to use, as you will create points for endpoints, and you may get duplicates during the process.
Hope this helps.
Silvia