The benefits of a battery cut switch are obvious. The problem (I had to remove it on my Longchamp) is that it's simply a bad connection. I had starter problems when hot, since I removed the cut switch no problem at all. I've actually been looking for another cut switch of better design and quality, haven't found one, because in this day and age most people buy the cheapest they can find. So it's a race to the bottom for the manufacturers.
So if you have no starting issues, keep the switch, if you have it could be a bad ground due to the switch
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