The Canadian Suzuki Burgman web site under the accessories tab is selling "Grip Heater Set" for the 2003/2004 650 Burgman. This is the first I've seen this. I thought the only way to get heaters was from Japan or adapting Honda's version of it. Check it out:
http://www.suzuki.ca/en/bike/accessorie ... ry=scooter
http://www.suzuki.ca/en/bike/accessorie ... ry=scooter