On Friday, May 12, 2017 at 11:56:50 AM UTC-4, wrote:

ahno, the switch has an LED lighting when the switch circuit routes power from supply to powered unit. Switch feeds power to ground and thru the LED.

Are you sure you mean this? That much current through an LED would destroy it in short order. In parallel to the current path, perhaps. But not in series.

Peter Wieck
Melrose Park, PA