yeah whichever one of those is the right hookup for your car will work. The important thing is whether the phone will accept it or not. A Blackberry will their very universal. Im not all that familiar with the 05 mustangs stereo but i imagine its like most ford cd players. i bought something just liek this for my 06 f-350 and i love it. I have a blackberry 8130 that i use as well. just gotta remmeber to talk a little louder since its still the phones mic picking you up.
Justin
1995 302 5-speed GT Red Coupe
1986 355 6-speed Z28 Green Coupe
1990 305 4-auto Iroc-Z Red Vert
2006 6.0 Power Stroke FX4
F.O.M.F. Racing