You probably can, but will only know really once you take out your old headunit out of your dash. If you see a usb connector, then you can try reusing that (of course, before fitting all the trim pieces back together, test the functionality of the mic, connected usb's, etc.). If ford has "proprietary connections", then the chances are slim and you most likely would have to solder the OEM wiring to the head of the usb cable you bought (knowing that it may not work, and risks are high). People on http://mustangforums.com/ may have a better idea of doing this.