The component with the lowest price in the TURNSIGNAL schematic is the Screw, Panhead.
The Turnsignal is made up of components including this Rear Flasher Light Assy 1 which is the most expensive.
The Nut, Spring (26h) is the most widely applied product in the XVZ12 VENTURE ROYALE 1984 (E) USA TURNSIGNAL ( four times ).