fitted a after market double din to my a4 b6 but my radio reception is very bad I have bought the fakra from Halfords and the reception was worse then the iso aerial and I did connect the blue wire.

Peugeot 407 2004 - Onwards Aerial Adaptor Amplified Fakra Iso Cable Lead PC5-136 | eBay

looks like I need the fakra and iso aerials combined to get a good reception can I buy a connector that combines both aerial and will it work with better reception??

thanks