youll need the yale program on a laptop and serial plug to be able to
program controller to slave or master depending on what you need it as and the dc converter is only for the lights its a stepdown from 36 to 12 volt

we use program some yale techs dnt even have it.
i say take controller to yale and let em know that you need it programed takes less than a minute
be a good idea totake both and have them label as right and left
and thers diff options like regen breaking if one has this and other dont one will slow down when releasing speed pedal and other wont
id say take both to dealer or have tech do it