The 01330 P21/5w 12v Stop is the cheapest item from this partsfiche.
This schematic depicts all components used in the Xn150 2001 5pr1 Italy 115pr-300s1 Taillight partslist.
Some items from this specific schematic: Rear Reflector Assy, Tail Light Unit Assy, Cord Assy, Screw.
