1+ Tail lamp  
2+ .Lamp lens  
3+ .Lamp lens  
4+ .Lamp gasket  
5+ .Bulb holder  
6+ .Bulb holder  
7+ .Reflector  
8+ Bulb  
9+ Bulb  
10+ Hexagonal nut  
11+ Shakeproof washer  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.