Might be an EUDM Nissan part...

So what is it? Japanese or European??

The lights are amber in Japan also. The laws there seem pretty strict. Trucks all have cages under them so cars cant get under them and they all have 3 bright green lights on the front in the center.
Here is a pretty cool link to configure your skyline (that has amber corners).
http://www2.nissan.co.jp/CONFIGURATO...op.html?from=0