I fitted heated grip, the connection is behind headlight so no need to touch fuel tank
its an easy job, remove headlight 3 screws, the remove plastic cover behind headlight 6 screws.
identify wires, two sets of wires are available always on and on with ignition I choose on with ignition, I also wired up the USB charging socket at the same time again the ignition on circuit
The hardest part was getting all the wiring in, not much room to play with
I did make up 2 x 2 into 1 adapters rather than cut connections off
Joy is riding your bike to it's limit