Steering wheel wiring diagram/pin out

[ThaiFiesta]

Hi, I’m investigating fitting paddle shifters to my DCT but need a wiring guide and pin out for the steering wheel clock spring connectors. Thanks. 

[ThaiFiesta]

So I’ve found a couple of line diagrams on the internet for the 2011 Fiesta and, since the steering wheels and controls are swappable between PFL and facelift, assume they are the same. 

Pin 1 - unknown

pin 2 - c/c control resistors

pin 3 - c/c control return 

pin 4 - horn

pin 5 - audio control resistors

pin 6 - illumination

Pin 7 - audio control return

pin 8 - ground

pin 9 - unknown

Does anyone know what pins 1 and 9 do? Both are wired on the steering column side of the clockspring.

The airbag seems to have a separate connector though this is a little unclear.