2005 Ford Freestyle Car Radio Wiring Diagram Whether your an expert Ford Freestyle mobile electronics installer, Ford Freestyle fanatic, or a novice Ford Freestyle enthusiast with a 2005 Ford Freestyle, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2005 Ford Freestyle vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics. 2005 Ford Freestyle | Stereo Wiring Diagram 2005 Ford Freestyle Stereo Wiring Information. Radio Battery Constant 12v+ Wire: Violet. Radio Accessory Switched 12v+ Wire: Black/Pink. Radio Ground Wire: Black/Orange. Stereo Amp Trigger Wire: Gray/Black. Left Front Speaker Positive Wire (+): Orange/Light Green. Left Front Speaker Negative Wire (-): Light Blue/White.