havent got a tenere so dont know what wires its got where but ive got the XT660R and added many electrical extras. There are a few places that you can tap/wire into like the horn, front lights, brake lights, (on the XTR) there are 2 connectors under the seat one for an alarm the other for an PC111 both have power when the ingination is switched on.

Where ever you connect into make sure to place a fuse inline with wire so as not to damage your GPS or any other item your using the bikes power for.

Hope this helps

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Plough on