On track, the locomotive doesn’t do anything. However, with connection to the loco-to-tender plug the locomotive thenruns perfectly, with working light too. So has a bad connection from the tender somewhere. You will get what you see, if you don’t see it then it isn’t included. If not sure, please ask me. In particular, if I don’t show or state there is a box, or battery, etc then there isn’t. Please don’t assume there is.