The pictures are because they didn't want to ruin a pair of grips.
They really are supposed to go under the grips.
What I did with same type years back:
Spray bars ends with 3m adhesive. Let tack up well.
Wrap element around bar and throttle tube (adhesive will hold in place. No need for electrical tape)
Cover with shrink wrap.
Install grips OVER the element.
Done
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