Trunk closing switch
 

Red Lights out and it won't close the lid. Pulled it out. The brown/yellow wire is hot, the grey/yellow becomes hot if I depress the switch, but the blue/white still doesn't get power.
I think the blue/white activates the trunk closer. And the brown/yellow electrifies the switch generally plus the light? But what does the Grey/yellow do?
All the other trunk lid lights work, license plate lights etc
Maybe someone could point me to a color coded layout of the trunk please.

Car in question? Year and model please.

2005 e320 cdi