Mark polarity on silkscreen of motor connection on motorboard.
Mark polarity of motor inputs on motorboard so that assembler gets easy cue to mount it correctly. (Polarity matters because if we want to throw the switch the opposite direction when i.e. a cable crawler reaches the end of the string, then the switch has to be on the side closest to the end, so it can be struck and thrown the opposite direction. In other words: Switch direction should be the same as the motor's rotational direction at the bottom of its axis when suspended from a string.