This Aerpro control harness allows you to upgrade to an aftermarket head unit whilst maintaining use of your factory steering wheel controls.

Steering controls are considered a primary harness and will require a secondary harness and patch lead to be used in conjunction for plug and play.

Specs: 

• Suits: Audi models with Mini ISO Connector
  A3 (8P), A4 (B6/B7) & TT (8N)
• Phone button compatibility: Yes
• Patch lead: Type C
• Notes: RCA Connections For BOSE & Half Amplified Systems New Radio Must Have RCA Audio Out Connectors, Blue wire must be connected to turn on factory amplifier. Half amplified systems will notice a reduction in volume from the rear speakers fading to the rear will assist in equalising the sound.
• Outputs:
• Reverse (Purple/Violet): Yes
• Handbrake (Light Green): Yes
• VSS (Pink): Yes

Known to work with the following vehicles:

• Audi A4 2001-2008 (B6, B7) 
• Audi A3 2003-2007 (8P)