I have the Motosportz HID headlamp, and while installing it on my TE 510 does not require the stator to be rewound, if I also use heated hand grips will that be pulling too much power? Also, where can I get a waterproof on/off switch?
You should be fine. I believe it will power both. You can run the grip heaters off the AC side as well. Trailtech makes a new and very nice light switch.