I have connected everything now. Run the cables for the camera. Just need to put it back together.  
  
I used a ring crimp and earthed it on the gear stick chassis surround. Got loads of interference when it wasn't earthed properly!  
  
The aerial has a male adapter and so does the HU. Is there an adapter I can buy? 
  
Sounds and looks awesome! Will post up pics when fitted and working.