BMW made a number of heated handgrip kits for R bikes. Many used the same actual grip pieces,
but had varying wires and switches to be a "plug and play" set up with the varying bkes.
The handlebar mounted switches were primarily /5 and /6 (and early G/S?) bits,
with the R65 and /7--> later bikes getting specific switches to fit in their dashboard openings.
And of course there were the  early RS model kits, which used a switch
that mounted to the upper fairing frame behind the dashboard.
Most all of these parts are still available individually.
While the BMW bits may cost a bit more, they work very well, are long lasting
and don't give one's bike that "cobbled together" look that you see so often.
Plus, as noted, they eliminate the potential to forget to turn the grips off.
The BMW pieces are wired to turn off when the ignition key switch does.
One time of dealing with a completely dead battery after coming out of work late and
no one else is around to help can make the BMW parts prices seem like a good deal.
Eddie
