The 21 Electrical 2 assembly is constructed from several parts from which the Main Switch Steering Lock is the most expensive.
Some items from this specific schematic: Wire Harness Assy, Horn, Fuse (10a-bl), Fuse (3a-bl).
fifteen components are listed in the schematic for this Ec-03 2011 1cb3 Europe 1k1cb-300e1 21 Electrical 2 .