Jerry ... I agree search "LED Strip lights " on Amazon ... you will see a whole new world of lighting, and great for train applications. The big roll John posted is a typical 16Ft. ~ long you can cut them for the length you want on the cut marks every 3 inches. RGB are the multi color ones the controller can do all sorts of things, also available are single colors. They have indoor / outdoor with a clear rubber..Silicone coating and indoor only without the coating just bare LEDs. You will also see short strips with a few LEDs . They are all 12vdc. You won't need to deal with resisters and diods, bridge rectifiers and such.
Good luck ,, Rick : )
