I have just installed the factory sat nav head unit.
I have bought a sat nav antenna and a set of Europe discs from E-Bay.
The unit works but the sat nav will not.
Is there anything I need to know to set it up?
I haven't got the manual for the sat nav.
When I select nav it tells me to insert the nav cd which I do but nothing happens.
Also I don't think the antenna is picking up the satellites.

Please help.

Thanks.

Norrie.