1994-2004 Ford Mustang 2003 Ford Mustang: V6, GT, SVT Power Seats Wiring Diagram – by admin • July 13, 2011 • 0 Comments (Last Updated On: May 17, 2017) This diagram is for a 2003 Ford Mustang and show the wiring diagram for the power seats. These seats were used from 1994-2004 models. The power lumbar is a common weak spot in the drivers seat. 77