I just bought a set of these, they look real nice too. I am happy with the purchase but wonder, why isnt there a sheet of paper that comes with each car that explains how to open them up to change a light bulb? No problems with the bulbs yet as they are brand new, but some day I bet I will need to change a bulb. IF not a sheet of instructions with each car, why not a diagram that can be downloaded in a pdf format or something of that nature?

Aside from that, I am very happy with my Williams Locomotives and cars, real good build quality and good value too.