bafang g510

Hi guys, today I regreased my Bafang G510 of my Dengfu bike. Everything was running easily. Unfortunately now I have a problem with the light output. Both front and tail light output don't react on the light switch. No power. I checked if anything inside the motor/controller could give a hint...

The long travel Bafang Ultra M620 emtb in my fleet. Originally built 2 years ago but modified to what you see now. A full video demonstrating how capable bot...