My habit is to flip the battery disconnect switch on my '67 whenever I park it in the garage. However, in a recent conversation with a fellow car club member(not NCRS), I was told that this will harm the alternator because it causes an internal voltage arc each time the switch is re-energized, eventually "frying" the alternator. I have been using this switch as stated for at least ten years with no apparent problem. Anyone heard of this happening?
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