DAB retro fit for cars with the cd500 and 600

[niteram]

Hi, this is something I would like to do on my car.
It's a sport tourer with navi600, so it has the shark fin on the roof. - It's a 2012 model on a 61 plate.
I've looked in the footwell - the 2 required connectors are present - so a good start

now the bit that I require help/advise with

I think that the DAB aerial is in the O/S/R window and should have a ZU (13353310) unit attatched, which should be wired to the shark fin.
Is that correct??