Hi RJR:
Well, remember that my locomotives are powered by the overhead. There are no rollers, and the red wire that connects to the roller box on the truck isn't connected to anything.
In other news, I found the arcing site in yellow below. The smell and a scrape of the area make it pretty obvious, and it matches where I saw the arcing:
However, I am at a loss as to why there would be short condition there. The other truck touches the frame here (and even the other side of this truck), with no ill effects. Like I said before, there are no wires that were pinched here, (that coupler wire was just in the way for this picture). Obviously something happened to cause this, and I will find out why, but for now it mystifies me.
