I can say the following about the heated-grips:
- it's a genuine Honda product;
- it works very well;
- the temperature is adjustable via a knob in the control box;
- it comes with detailed instructions allowing anyone to install it;
- in my bike the position of the control box (installed by my Honda
dealer) is not the ideal because it is obstructing the left handlebar
bolt, so it is necessary to remove the control box (it's bolted) when
changing the oil in the fork. A photo of the control box can be seen
on his homepage
You can send your questions about these modifications to Antonio