Hi, Does anyone retrofitted heated steering wheel?

I need to change the vinil steering wheel in favor of a leather one on my Astra j. 
Since i will buy one i thought that i can buy the heated wheel.
I allready sorced the heather control with heated wheel button
As far as my logic goes i will need the folowing parts
1. Wheel itself
2. heather control
3. the airbag squib with 

What else will i need to source? Is there a different loom from the squib to some other control module?

As