1+ Electric aerial  
2+ .Aerial mast  
3+ .Aerial ball nut  
4+ .Aerial sealing grommet  
5+ Aerial drain tube  
6+ Drain hose grommet  
7+ Paint clearing screw  
8+ Nut  
9+ Plain washer  
10+ Aerial coax cable  

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.