Atlas wiring diagram reference to "common"

Bill Wilken

On one wiring diagram that Atlas has published concerning signaling, it calls for a Tortoise switch machine to be connected to "common."  In single booster DCC layouts, however, there is no true "common."  How would you recommend that I interpret the term?  

Allan AE2V

Hi Bill,

Can you supply the diagram you are looking at.  There are lots of different kinds of commo.

Thank you

Allan Gartner
Wiring for DCC