The component with the lowest price in the TAILLIGHT schematic is the Screw,pan 4x12.
A sample from the products for the Taillight include: Rubber,cushion, Socket Comp., Bolt,tl/lt Sett., Bolt-washer,6x22.
This schematic depicts all components used in the Cb750k 1981 (b) Four Canada Taillight partslist.