When i get back from this road trip im definitely getting some heated grips. We left Indy saturday at around 35 degree and my hands were pretty dang cold even with the tusk mittens over the handguards. The mittens kept me from having to stop and warm them up. Last two days it has been low 40's and pissin rain on the blue ridge pkwy=freezing damp cold + wet. My buddy let me borrow a heated vest so i wired up a powerlet and man it is nice to have the heat. No problems with the vest and headlight on together plus i have a switch for the low beam so im glad to hear you have no problems running both with the healight off.