A:AnswerHi, yes you should be able to toggle the movie from your stereo to any smart device that is bluetooth capable. The bluetooth feature will allow this.
A:AnswerYes it should fit but may require a dash kit to replace factory unit.
Also make sure you get the right hardness adapter if you are equipped with sterring control (volume and such)
A:AnswerIt looks like it should. I searched 04 mustang radio and it seems to be a double din. If you know it's double din and not single, then yes.... Check crutchfield website and put your car in. It will say if it fits or not.
A:AnswerThe Best Buy description says that installation by the Geek Squad is included in the price. I don't know about the harness. But if that's what he quoted, that's what it is, I guess :-)
A:AnswerWe had to buy a kit that hooked into the factory connectors for a 2006 Toyota 4Runner.
you can check on Crutchfield. they have a lot of good info on what fits and what works.
I bought the stereo from BestBuy because it was on sale and I got it locally.