You can't miss the connectors. They won't be hidden inside shrink-wrap.
If your switches are like in the photo in post #16, the lever needs to hold them down at rest. If they're up when you switch on the controller, you'll get an error code, which seems to be 0-2 from your description, so your fault probably isn't the brakes; however, you need to disconnect everything from the controller to find out what's causing the error, so pull it out, disconnect the brakes, pedal sensor, motor halls, and throttle, then plug them in one at a time to test which one gives the error, if any.