Bought one of these kits ages ago, and finally got around to installing them last week. Now, I'm kicking myself for waiting so long to do the install- it was a breeze, and these grips really do the trick.
The temp comes up quickly on the highest settings; you'll soon be turning it back to perhaps the second level, which will be plenty even with thin gloves on a fairly cool day.
Two thumbs up for this product. (Posted on 3/16/13)
The grips are straightforward to install requiring a 'ignition on' only power source to protect battery in case grips are left on. They have a nice little controller which mounts neatly on handlebar without taking up much space. The only concern I have at this point is the output of the grips. They produce less heat than Oxford grips on my other bike at the equivalent setting. The box doesn't say what the grips are rated at but the 4 amp fuse gives a clue. Prob not hardcore winter grips but good for warmer times of year or climates (Posted on 12/31/12)