AM/FM Signal Amplifier Car Radio Antenna Adapter for Volkswagen Passat Beetle for Audi A3 A4(B5 B6 B7) A6 (C5) A8 (D2 Chassis)|Cables, Adapters & Sockets| - AliExpress
3565G Audi A4 B7 Avant (Estate) 2007 ANTENNA AMPLIFIER RADIO CONTROL 8E9035225P | eBay