I have the above CD player, however I suspect this is not the original factory model

My problem is that I cannot use the steering wheel controls

Looking at the back of the CD player the leads coming from the steering wheel are not connected to the player itself
Also the plug coming from the steering wheel does not fit the slot in the CD player's body

My question is:
Is there any lead converter that will allow use of the steering wheel controls?
If yes link or name to where I can get them would be very much appreciated

Thanks in advance for any help