Hi Michael,
in my case, the cable goes also exactly like in your link. And I can confirm that there is no problem with it. You can go for that heating stuff - I would recommend it.
A change that I would like to have is at the left side when switching the light between high beam and low beam. As I'm right-hander I still have some problems sometimes when I want to switch back to low beam as fast as possible, but thats not your topic
BR,
Mark