My 2009 Roadster had female ISO Connectors on the end of cables, so a cable that goes into the female sockets to your choice of radio will be needed.
Details on
WIKI shows what is what.
I had to buy the wire to go from the back of the Pioneer DAB unit I purchased to connect to the sockets, like this:
The single black bit goes in the radio head unit. Seems that all radios makes differ...
