OK, I've searched about this - and, couldn't find an answer. On the FL-2 there is a "decoder ground wire" black with gray stripes. What in the world is it for - and, is it needed - ? If so, where would you terminate it - ?
I am using one in my Kato GS-4 - I am using a DZ126 for motor control and adding a rear light.
Thanks,
Wolf