Mistrious bike make misterious bug

[Holi]

Hello everyone!
I've installed a xunlida 866 controller and LCD kit on an old misterious electric bike.
the motor seemed to be turning in the wrong way, so I connected the "programmable" wires hoping to turn it back in the right direction, but at some point I did connect one of them with the light wire. Since then, I have the brake signale on the lcd display and the motor wont turn anymore.
Does some of you has any idea on how to fix this?

 

[Nealh]

Whether or not vonnecting the light connetor to the learn wire has caused a short in the controller one won't know.
Have you fitting a brake cut off or do you have one fitted to the bike ?