I recently bought a 2015 mazda3 hatchback. It has that oudated manual AC control panel. I would like to change it to the digital control panel. Other than taking apart pretty much the whole center column do what to I need to do with the wires? What about the PCM and or BCM should I be concerned about that?

 

You will need the entire heater box assembly out of a model with climate A/C, along with the BCM & heater control panel.