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Jack, short power wires is a principle and my diagram showed an acceptable GND point. Any GND point of shorter or similar distance from the chip will be fine. We re-oriented it from the China site in order to keep the wires short so I can't recommend a long GND wire.
On the other hand I would say try it if it simplifies matters for the installer. If it works at all it'll always work.
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[b][color=red]Charlie[/b][/color]
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