I have one on mine, and used them on Formula 500 cars for years as well (similar vibration), and they work fine. The only issue I had once on an F500 was that I used a toggle switch, and after hitting a curb particularly hard one time, the switch switched itself. I then upgraded to a “firmer” switch (the old one was particularly bad with a rather large toggle arm), and have never had an issue. On the kart I’m actually using an OE Honda part, which is just nicer since it has the correct connector on the end.
That said, I hardly ever use it on the kart. My only real reason for having it is so I can kill the engine in the event of a chain break.