When walking on foot and travelling on the 7:11 from Liverpool the engine still has a 'red' headcode lamp: https://live.dovetailgames.com/live...710/shot/72065889-d035-449c-a233-c63aa58f414f - The rear 'white' one having been removed after reversing and coupling to the train, after turning around on the turntable.
RE: Indeed, if I was operating the locomotive. However: and so the AI was controlling the engine! It did correctly remove the rear white light after the turntable and coupling up to the train before moving off in the opposite direction.