Grip Heaters - where to mount a switch?

I rode a bike today with grip heaters and they were awesome. I want to put a pair on my 82 KZ1000 LTD but where could I mount a switch? I'm drawing a blank here, could use your help.

thanks,

David

Headlight bucket(the top of it)?:whistle: ...

I put a micro toggle on a little piece of metal and then put the whole mess on the throttle side using a throttle housing screw. One guy had it up close to the ignition switch I rode with, not sure where it went up there. My bikes with fairings have more places to stash them, but on the vfr I put it close to the thumb so I could flick it on and off without taking the hands off the bars.