Parts such as the Turnsignal Lamp (vl800c E28): Washer(6.5x20x1.2), Screw(5x16), Screw(4x10), Spacer(6.4x10x18) are included in the Vl800c Boulevard C50 2012 (l2) Usa Californ Canada (e03 E33 E28) Turnsignal Lamp (vl800c E28) parts fiche.
In this schematic the "Clip(black)" is used most often.