[PDF] The following pages show wiring diagrams for F250 – F550 The following pages show wiring diagrams for 2005 – 2008 F250 – F550 trucks. From 2005 – 2007 the wire color is Gry/BLK and is pin 21 on the ABS module connector. For 2008 + the wire color is Ye/Blue and it is also pin 21 on the ABS module connector. On the following pages, the first is 2005 – 2007 and 2008 is shown last. Headlight wiring for 2005 F250 - the12volt Headlight wiring for 2005 F250 - Hi Everyone, I was looking for the wiring diagram for the headlights of a 2005 F250. I hooked up an Avic Z1 to my friends F250, and I'm having a very weird issue. After installing it, the headlights don't work when the key is on. When the key is off, the lights wor Stereo wiring diagram for 05 F250 - Fixya wwwa››Ford›F-250›2005 Ford F 250 Super DutyJan 27, 2013stereo wiring diagram for 05 F250 wire colors and discription - Ford 2005 F 250 Super Duty question. Car Radio Ground Wire: Black/Light Green Car Radio Illumination Wire: Light Blue/Red Car Stereo Dimmer Wire: N/A I need stereo wiring diagram for chrysler 300 srt8.