Hello all, first time poster on here, but have been reading in the shadows for sometime
I appreciate not everyone will like my way of doing things so feel free to comment, but I chopped a 2/1 piece of the drivers cab roof out to be able to insert a 1x1 brick with hole and add the lights in so it looks part of the train, check out the youtube video below
https://youtu.be/z1V0lBAfAkg