Anyone have a schematic or wiring diagram for the hand warmers on these sleds and does anyone know if there is a difference between actual heaters on the 2021 and previous years sleds (2017-2020)? I've been having issues with mine since I bought it, I put new warmers on and they worked great for about 2 hours when the throttle side warmers quit working and I've been trying to figure it out ever since.