Parts such as the Chassis Electrical Equipment (ex: Band-rubber, Wire-lead, Key Set,#239, Key Set,#235 are included in the G3ssa 1971 Usa Canada Chassis Electrical Equipment (ex parts fiche.
The sub assemblies and components that make up this Chassis Electrical Equipment (ex include this Wiring Harness,main, the most expensive part.
In this schematic the "Band-rubber" is used most often.