Product highlights
What's in the box
Written by Crutchfield's Bob Bihlmayer
PAC's RP4-AD11 wiring interface lets you replace the factory radio in select 2004-13 Audi vehicles with or without factory amplified systems. You'll retain your factory steering wheel audio controls and the use of your factory amplifier and subwoofer (if present). The interface also supplies the databus-driven output you'll need to keep your retained accessory power (RAP), as well as the outputs you'll need to install a navigation receiver.
Important Note: When you install a new car stereo, you'll lose the ability to fade from front to rear if you have the Bose or Symphony audio system.