Parts such as the Taillight: Cord,tail Light, Cord,tail,light, Cord Tail Light, Collar,tail Light are included in the Cb750k6 Four 1976 Usa Taillight parts fiche.
The Taillight assembly is constructed from several parts from which the Bracket,no.plate is the most expensive.
On this parts fiche the Rubber, Cushion is the most specified component.