Does anyone know if you can retrofit heated front seat parts ,is the wiring there as standard

On my S spec 2014 Superb, the wiring isn't present and it wasn't an option as far as I know. The air-con on the S is not the same as the climate control unit on other models and I've only ever seen the climate control unit available with the three stage heated seat switches.

 

I retrofitted full leather so I'm now going to add switches to hook up the heated seat elements that I transferred over, though there isn't an OEM option, so I'll have to come up with something else.