For those of you interested in building modules in Z scale, you are invited to visit:
The PDF manual the Z-Bend Track module standard is on-line.
And, if you click on "Cables," you'll see how the wiring is handled, and how to get kits and assembled cables (at cost, through a non-profit venture).
There will be 100 scale miles of Z-Bend Track modules at this year's National Train Show in July. Come see us in Ohio.
Z Scale is not just for coffee tables anymore.
Regards, Bill K. Houston