Hi, I have a 2010 Davinci electric scooter. 500 watt, 48 volts. I seen online sometimes you can unplug a wire that goes into the controller to get more top speed. Well, I tried all three wires And nothing. Does this mean it's inside the controller? Do I need to solder something? Or take apart some solder piece? Any help would be awesome. Cheers.
Robert David