SWC Harness Audi A3, A4, A6, TT 2001 – 2014 Bose & Half Amped System (Quadlock)


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Audi A3, A4, A6 & TT steering wheel control interface with RCA Connections.

For BOSE & half amplified systems. For vehicles without a digital amplifier.

*Note – New Radio Must Have RCA Audio Out Connectors.


Features & Benefits:

  • Allows you to upgrade to an aftermarket head unit whilst maintaining use of your factory steering wheel controls
  • Safety: Allows you to keep your hands on the steering wheel and eyes on the road.
  • Plug and play, no cutting of wires required
  • Maintains the original features of the vehicle such as date, time and temperature display
  • Choose the relevant head unit connection lead according to the make of aftermarket head unit you wish to fit
  • For interfaces where phone buttons are supported, the following brands allow pick up/hang up in Bluetooth mode: Alpine, Clarion, Kenwood, Pioneer and Zenec. Please see icon list below to see if this interface supports phone buttons.
  • Please check the connections in the vehicle match the harness you are purchasing
  • This product has been developed through carefully documented data and research. Connects2 Ltd. cannot be held responsible for discrepancies/inconsistencies that may occur due to vehicle manufacturing changes or options, or damage that may occur in the vehicle during the installation of components. All application data is subject to change.


Radio Patch Lead:

CTMULTILEAD.2 For aftermarket radio’s with SWC ability

Manufacturer Model Note Year From Year To Headunit Connection
Audi A3 8P Model 2003 2013 Concert, Chorus, Symphony Quadlock (40 Way Fakra)
Audi A4 8E, B6, B7 2001 2008 Concert, Chorus, Symphony Quadlock (40 Way Fakra)
Audi A6 2004 2011 Concert, Chorus, Symphony Quadlock (40 Way Fakra)
Audi TT 8j , Mk2 Model. Not compatible for models with a digital amplifier. 2006 2014 Concert, Chorus, Symphony Quadlock (40 Way Fakr