I have them and use them very often. It has 3 levels of heating and until the summer will come I use level 1 all the time (here is 16-19°C and cloudy). Must have for me. And not expensive.
Been waiting for backorder OEM heated grip kit. Just installed it yesterday and found that it doesn't require the pigtail connector that's included in the kit. Also the connection behind the headlight is labeled "heated grip"
Sorry didn't take pics of the whole process.