Hello!
I have 330cd and radio navigation with MKIV Nav computer and I want to upgrade to 16:9 navigation. I've allready bought 16:9 boardmonitor with CD unit but as I read on some threads I will also need radio modul. Is this true, will I need new wiring as well?
Which radio modul should I buy?
Is there any non-original cheaper radio modul on the market.

MKIV part number: #65906942908-03
Navigation part number: #65.52-6 987 218


Thank you for your help.