I have managed to mess up my throttle side grip heater, but they are so anemic I am not even sure when it went out! The BMW R & R is as usual very expensive and will just give me another anemic grip heater. Has anyone added aftermarket heaters using the original switch and wiring? I don't want to add external wires and want to keep the bike as original as possible, but thought I may be able to upgrade and have some real heaters. My RT had super grip heaters-guess the RS aluminum handlebar is a real heat sink. Any thoughts would be appreciated. Thanks!