I need help with wiring the stepper motors to the Ramps board. The build instructions show the wires attaching to the board with the green wire being the first starting from the left for all the stepper motors except for the z carriage assembly which is not clear to me. The one picture shows it being held with green wire first, but the other picture shows red wire first while being held near theby Markus4e - Prusa i3 and variants