# Extruder is running backwards?

I have a (HIC) version of the Prusa i3. I have recently installed the E3D v6 hotend and titan extruder. After fixing some other issues, I noticed that there is no filament being extruded. In addition, the gear looked like it was going in the wrong direction. How can I fix this?

#define INVERT_E0_DIR false

change false to true (or vice-versa). Note that if you go for the connector-flipping route, make sure that you only do this when the printer is turned off.