I have a '00 650R. I've had handwarmers on several bikes & have always used the universal tape type to be mounted to the bars under the grips which can be had locally which have a Hi/Lo setting with a resistor for the low setting. I've always just added a 2 position, on/off switch & ran the left side without the resistor & ran the resistor to the throttle side to equalize the heat. This works but I would like a higher setting for colder days up here in the NW. Anyone out there figured out a way to prevent the left side from absorbing heat into the bar so a Hi/Lo setup will work equally to both sides? I thought about getting some thick heat shrink to apply under the element on the left side & using a throttle grip to compensate for the added diameter but this would require 2 throttle side grips to work as well as possibly causing adhesion problems.