Wiring Through Steering Column

[WiltshireTouring]

So I am halfway through a plan to install a heated steering wheel.

I've got the wiring from the battery sorted and I've already got the wheel retrimmed with heated elements in and tested it's all working.

My issue is now that I need to wire through the clock spring or find a way to bypass whilst still allowing for the rotation of the steering wheel.

I've thought of a few different ways but none of it makes sense without adapting the clock spring.

I have seen there are two spare pins in the connector to the clock spring and wondered if they were connected to anything the other side?

The other thing I've seen mentioned is that splicing in to the horns/controls and activating anything will set the horn off until the ignition is switched off again?

Any help would be much appreciated please see attached images for context!