I just bought a 14 ST ST1 and looking at upgrading my head unit to a BP800Play that I had in my previous car and had no problems with. What harnesses do I need to still have control of my steering wheel controls? And is it worth just paying a shop to do?
After nearly one week of enjoying the ST, I'd have to say the stock Sony 10 speaker system is pretty good. I felt the factory audio settings made the mid range a little flat, so my current adjustment is bass +3, mid +3, high +1.
Here's a couple of pics of the Subwoofer and amp: