The FRD04-AUX adapter from Precision Interface Electronics converts the Rear Seat Entertainment port of specified OEM Ford / Lincoln / Mercury radios to RCA level audio input. The FRD04-AUX has a built-in audio adjustment pot with an input sensitivity range of 0.475 volts to 4.75 volts (peak to peak) allowing the installer to match the audio level of the AUX device to the audio level of the AM, FM, or CD modes of the factory radio. The new part is compatible with the following Ford, Lincoln, and Mercury OEM "CAN-BUS" radios with "AUX" button:

FORD
Edge 2007-2010
Expedition 2007-2009
Explorer 2006-2009
F-150 2004-2008
F-250 2005-2009
F-350 2005-2009
F-550 2005-2009
Focus 2005-2007
Freestyle 2005-2007
Fusion 2006-2009
Mustang 200-2009
Sport Trac 2007-2009

LINCOLN
Mark LT 2006-2008
MKX 2007-2009
Navigator 2007-2009
Zypher 2006

MERCURY
Milan 2006-2009
Mountaineer 2006-2009

Note: Not compatible if vehicle is equipped with OEM Rear Seat Entertainment (RSE) system, navigation, or factory satellite radio.

Installation Diagram

Click here for updated FRD04-AUX fact sheet and installation instructions