Hi everyone. I am new to the forum. I just purchased a 1997 Polaris 600 xlt limited. I have a quick question regarding the thumb/hand warmer controls. The one button shows hi, med, low and off (pretty self explanatory) for the hand warmer the other button (thumb warmer) shows "off" in the middle and "on" on the top as well as "on" on the bottom. What does each on position signify? All help is appreciated thanks.