05-09 Mustang Wiring Diagram? | Mustang Forums at StangNet 05 Mustang GT Engine Wiring Harness Diagram: 2005 - 2009 Specific Tech: 0: Apr 14, 2020: R: Lightswitch diagram/function Mustang II: 1974 - 1978 Mustang II Talk & Tech: 12: Feb 14, 2020: N: SN95 Need wiring diagram for 3 1994 Mustang GT Please! 1979 - 1995 (Fox, SN95.0, & 2) -General/Talk-9: Sep 13, 2019: J: 1983 Mustang wiring diagrams 2003 ford Mustang Stereo Wiring Diagram | Free Wiring Diagram Variety of 2003 ford mustang stereo wiring diagram. A wiring diagram is a streamlined standard photographic depiction of an electric circuit. It shows the components of the circuit as simplified shapes, as well as the power as well as signal links in between the gadgets.