The other mod I did is installing a heated grip from ebay.

This is the finished left handle.
Here is the heating element and the heat shrink.
Curl the heating element around the handle and wrap the heat shrink around
Then shrink the wrapper and it holds the heater in place.
I installed the switch to the handlebar clamp to keep it readily reachable and somewhat elegant. Gotta cut & spread the loop to make it fit between the Allen bolt and the handle bar.
Wiring it up is very straight forward. Ground the blue wire and run the red wire to a power source. I could have tapped it directly to the battery but there's the threat of killing the battery if i forget to turn off the switch. Or some kit could come by and flick it. So I ran it off the lighting, blue and red wire in the tail light harness. Gonna move that blue ground wire to sit under the switch next chance I get.
The kit is $10 and it works well. Its not as elegant as more expensive kits but its a quick install and it works. Haven't taken it out on the road yet. But just my luck, after a month of freezing rides I installed the kit and we are scheduled for a warm week in the 80s. I think a cold front is coming later in the week so I'll report then how warm the kit kept my hands during a ride.