I hope I have posted in the right section...I apologize if mistaken..

I am asking please if anyone knows where I can get fitting instructions or something simillar for this simple Land Rover part Tow ball, code RTC8891AA.
Towing Ball for Land Rover DEFENDER (NOT NAS) All RTC8891AA - 2010

I need this for the approval check up I am going to do.

I will Mount this part together with the long rear step code STC50269!!

thanks guys!