SeeMeCNC Rostock MAX v2 Assembly Manual page 191

After crimping the pins on to the wiring, please make sure you follow the wire order in Fig. 18-
20 exactly, otherwise your extruder drive may not operate
properly.
Now bring out the stepper motor wires and connect them into the motor plugs along the bottom
edge of the RAMBo controller. Each axis is labeled – make sure you match them up! The position
marked "E" below is where the extruder extension goes that you just added a connector to.
Fig. 18-21:Stepper motor connections.
Rostock MAX v2 Assembly Guide
Fig. 18-20:Extruder extension connector
installed.
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