Hi I've just picked up a RAPIDO Dash 8m, it's in the new-ish livery with CN's web page on the side. Anyway a photo of the loco after its repaint shows it fitted with a red light next to the ditch light stand. I think I've seen it on other newer locos but I'm not to sure what its for, lastly will I need to make my own or would I be able to buy one?
As always any help is very welcome