4+ Relay  
5+ Relay  
6+ Relay  
7+ Flasher unit  
8+ Shakeproof washer  
9+ Hexagonal nut  
15+ Fan relay  
16+ Self tapping screw  
17+ Headlamp dip relay  

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.