Idatalink Maestro HRN-DSP-FO2 DFO2 Plug and Play Harness for Non-Amplified Ford Vehicles ^^ T-harness to add Rockford Fosgate DSR1 processor to select 2011-up Ford vehicles ^^ Retain fader control, tone, and other important features and functions ^^ Factory stereo will no longer power any speakers directly. ^^ 4 channel, or more, amplifier will be required to run the existing speakers ^^ Needed amplifier (s) will be based on the speaker configuration.