The eleven Gp125u 1978 (c) (e01 E02 E04 E06 E13 E14 E17 E18 E21 E22 E24 E32 Headlamp (e2) component parts are all listed in this schematic.
The Headlamp (e2) assembly is constructed from several parts from which the Headlamp Assy is the most expensive.