I have two Raleigh Velo Cite bikes, both of which were bought from the same dealer at the same time. So I am told by the person I bought them from. They look identical, and I have found something missing on the controller for one bike. There is no HALL connector on the controller. They both have the same model number and the only difference is the code BTN-13 on one with no HALL and BTN-51 that has HALL. Both bikes have the hall connector with 5 pin JST from the motor. This bike I have not had running so can't say how it runs. Does anyone know what the difference in the code is with 13 and 51?