Hi all,    I recently got my hands on a T reg Felicia. I am planning on installing a small sub and some more speakers, I love my music.    My first step is going to be to swap around my stereo to one that has a bluetooth connection. I was thinking of purchasing the Sony DSX-A400BT.    The Felicia currently has her original stereo and I was wondering what wiring I am going to need to be able to connect the new stereo in, has anyone done this swap or a similar one bef