What is this wire (check link below for pics) and where does it go to inside the dash loom. It needs replacing, end to end ideally. Not sure if its replacement can easily be inserted into the connector to the stalks?
Also, how do I change the brass horn ring. The wheel is a leather Golf Gti campaign four button small spline. Not obvious how it fits and I don't want do do any damage.
Pics of the carnage

https://goo.gl/photos/1cnLdJj5T1kA6gE49
All guidance and opinions welcome at this stage!
Dave V