I haven’t got the new electric KD couplers yet. One of the benefits of MTH’s DCS system, is the ability to drop cars anywhere on the layout.
http://www.youtube.com/watch?v=JG3hddXiGPc
I forgot how to link again. If you’re in a hurry, go to about 2 min in and see the cars get unhooked. I’ve been installing their system in all of my engines. This one’s the Aristo dash 9.
Thank you Joe Z!