I need more working outside lights on my layout. It's dark in my layout dungeon and I kind of like it that way. Well the factory ones are expensive (3 for $7) and they burn out a lot. And when they burn out we toss them. So I bought some white 3mm LEDs, some Campbell's light shades, and some K&S copper tube. I picked the copper over the brass as I think it's easier to solder. I also needed some wire that would fit in the tube. The old wire from a burn out factory pole light fit fine.