The Headlamp (gsf600t/v/w/ut/uv/uw) assembly is constructed from several parts from which the Headlamp Assy is the most expensive.
This schematic depicts all components used in the Gsf600 1999 (x) (e02 E04 E17 E18 E22 E25 E34) / P37 Headlamp (gsf600t/v/w/ut/uv/uw) partslist.