This is so great, IvanRaide, well done. I want to do this for my DMH W4660NEX. I miss the volume knob so much.
I already have steering wheel volume buttons connected through the iDatalink Maestro adapter thing, but they are slow to respond. iDatalink says if you have their adapter, you shouldn't have anything in the W / R port. But I called them and they clarified they are referring to stuff that should not be there, not stuff like your volume knob which talks to the unit and works. Which makes me think maybe I COULD HAVE BOTH. muahahahaaha
But I am not very electrically savvy. Do y