For now, it seems to me that the line may be in some intermediate state between full on and full off that is confusing the empeg. Been a few years since my last electrical engineering course, but I think there is even a name for that :-)

YES!!! It's called "Debounce"!

You may have hit on something!

Hugo, is the sense on the 12v switched line debounced?!?

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Tony Fabris
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Tony Fabris