Audi models with RNS-D or TT (97-November01) ISO radio adapter harness, BOSE audio - InCarTec
Connects2 - Vehicle Integration
Amazon.com: Metra 40-VW54 VW Amplified Antenna Adapter w/Metra 70-1787 Radio Wiring Harness for VW/Audi Bose Integration 1993-2007 : Electronics
Audi A3 A4 A6 RNS-E Bose plug & play adapter retrofit kit | eBay
Fiber Optic MOST Adapter for AUDI/BMW/Mercedes-Benz/Porsche/VW : Aftermarket Navigation Car Stereo, Android Navigation DVD Player, Car Navigation Head Unit
PAC C2R-AUDI Wiring Interface Connect a new car stereo and retain the factory Bose® or Symphony audio system in select 2004-up Audi vehicles at Crutchfield