Wow, this kit totally transforms the Winter Village Station set!
The kit is comprised of several lights to light up key areas of the set including the interior and exterior with both warm and cool lighting.
The interior lights and the light under the awning and in the lightposts by themselves add so much to the feel of the station which alone would have made for a great kit right there, but the addition of colourful lights across the roof take it to another level, with the flashing and fading of each LED in a nice random-like pattern (it's not actually random, but different LED's will fade while others will flash and then they trade places).
The lights in the bus are amazing too - you wouldn't think lighting up the headlights, taillights and the interior would add that much to a vehicle, but it does.
Be warned, however - this kit is fiddly to install! To get it right, you really need to route the wires away to hide them and this set does make that a little difficult to do that without accidentally collapsing bits of it. You'll get there in the end, but exercise patience! I doubt the average kid would have the patience to install this light kit.
The bus comes with a battery pack (with batteries included!) so you can still play with it separately, however I have powered my kit using the USB adapter, so the bus is now tethered permanently to the Station, but there's enough cable slack to be able to re-position the bus freely as desired.
Overall, highly recommended!