As for Progressive Industries electrical management system, I have read mixed comments regarding a slight hum noise when powered. Some say not, some said definitely yes (read on Amazon comments area). You may want to install this in one of the exterior luggage bays in case the hum is a real issue. We already notice a slight noise from circuit box fan under bed.
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Jack
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2018 Greyhawk 29MV
2017 Ford Edge w/Blue Ox Setup
To Yosemite... and Beyond!
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