battery power seems to be the issue, either overall low battery Voltage levels, a cell or cells within a battery having 'specific gravity' low readings, or a loose/corroded battery cable...
voltage can drop and cause flickering, etc., even when it seems sometimes that other things work fine - but add the additional load and it shows you that it's struggling.
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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