only the '04 viper has lower heat output. everything year prior to that was like hanging onto fire. it was when yamaha moved the switches to the handlebars that the heat output was decreased.
rode a week in january when the temps were -35f last year and i was fine when usuing guantlets as well. on my pre-'04 sleds, i wouldn't have even to have had to use the guantlets at that temp. my connections are fine. there is heat, just not much of it, like on past sleds.
just seeing if someone had figured out a way to increase the heat output. i doubt it, cause i thought i would have heard something by now.
rockmeister is looking into whether his systme will fit on a viper. it should. the only issue would be whether it will work without a battery.