A few days ago the LCD of my Bafang give me error 21, and I discovered that the wires are disconnected from the circuit board.
Now, I dug to get to connections, but I don't know which wire goes to which place.
It should be easy to figure out wiyh a voltmeter. Black is ground, which is marked on the pcb. Red will be 5v. The white is the signal wire, which will go to the third pad.
