Ive not got a tenere but i cant see there being any problems. Heated grips are simple to fit really and shouldnt take too much power/watts from your bike.

What type are you going for??

Ive oxfords with the old style push button with a knob controller. They work great and the grips give off masses of heat. My dads got the new ones which have the flat push button only controller and it seems to not like being on with out the bikes revvs going. Something to do with an automatic switch off system so it doesnt drain the battery!!! Grips still work fine when the bikes going just you cant get any heat in slow/stop,start traffic as they keep switching off.

Get them on you know you want too.

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Plough on