Hello, I have a Mazda CX5 with a Pioneer MVH-1400NEX in it, it was installed by the previous owner. I'm looking for whatever I need to be able to use the "talk button" for Siri. The way it is currently wired, some steering wheel buttons work (volume, next/previous track). All the talk button does is lower the volume. Can I make it so the talk button invokes Siri?