Extruder Runs In Reverse on Newly Completed Aurora Z-605S

Hi,
I just completed assembling my new Aurora Z-605S purchased from Gear Best. When I use the Move Axis feature under Prepare on the LCD, the extruder runs in reverse; negative motion feeds filament. All of the cables and connectors are plugged and appear to be the correct orientation. Has anyone else seen this? What wiring configuration should I check? Thanks!

I failed to mention that the other axis motors appear to move in the correct direction.

If the system is using Marlin, just change the following line in configuration.h

#define INVERT_E0_DIR false

(if it is true change to false, etc.)

Or, just flip the stepper motor plug.

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-David

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Thanks. I swapped the A - and + wires. Working fine. Now I need to get all the calibration correct.