Its broken.

It says that its missing 'the connector piece'
What ever that is I am not quite sure but she has a sort of jimmy rigged wire sticking up from the base of the neck.
It came with a haruka head which I wanted to switch out with a DD head
...I am just hoping that if I get the new head it will connect okay..
SO my question without pictures , to people who have DD heads, what does the bottom of the head look like and how is the head cap help in place? Is it like a haruka head that just sorta pops in to the other part?