I bought an RMT Lehigh valley RDC and got it today...when my son got home we ran it for a while. I turned around to unplug the ZW and he speaks up- "hey daddy look, it lights up"! WT....it did, and the power was off. He pushed it back and forth and the directional lights were working fine...with the power off! I have to guess the motors were acting like generators at that point...this was over an hour ago and it still does it...weird!
Do yours do this too?