I didn’t take any pictures of the actual grip heater element installation, but there’s nothing special about that. The important part is getting the wires connected correctly so the ECU senses resistance, which enables the grip options in the menus.
I tried several different combinations of connections, and spent quite a bit of time trying to understand how the ECU was controlling the current flow through the grips, before coming up with a workable combination.
I’ll draw up a wiring diagram and take a few pictures of the actual connections I made on my bike, but it’ll be a few days before I can get it done.