After an awesome day of busting powder and getting all three of my pairs of gloves much wetter than I had planned, we rode back to the trucks. The hand and thumb warmers were both on high and my hands were nice and toasty on the ride out but, my thumb froze (even on high). I went to Ebay and after a brief search found many aftermarket options but, I don't see a watt rating on them. Has anyone found a higher wattage thumb warmer they can recommend that maybe can be spliced into the wiring harness?