Originally Posted by mac.mogul
The Ford Ambient Lighting harness is under the center console just in front of the cup holders and to the left of the shifter.
Chances are if your car didn't come with them, you won't be able to install the OEM kit.
This is the location of the harness where the LEDs get power.
Mine is attached directly to the bottom of the cup holder. Right under that is the airbag control unit also.