I've opened up the trunk to look at the connections. Don't know if the overview image below shows everything as it should be.




It perturbs me that don't appear to be direct wired links between what I've marked above as connector 1 and connector 2. In connector 1 the connections are at the top so they don't appear to link into the connections which are at the bottom in Cable 2. Illustrations below. Is this right or am I missing something?

Headunit is working fine apart from DAB won't tune and no steering wheel controls.