About Bafang controller for G330.250 mid motor. Can this controller of bafang work with only the 36 volt + and - wire coming from the 36v battery. Does it need the battery communication connection?? I am rebuilding votani x1 bike. Replace external controller of darfon with Bafang controller..but mis insights..?? Can i program this Bafang controller..its an uart protocol?..Mahalo..Paul