I just received my wheel (24" w/ 48v battery pack). I have many questions, but, an answer to the first may answer most of the rest... I did not receive any documentation (installation instr.). What is the best online source for installation instructions for a first timer? I don't necessarily need mounting instructions as this is going on a Trailmate Regal Hauler adult trike (front wheel w/ disc brakes). Mostly electrical... Also, do I have a MP III or a II? How do I tell the difference? I have a separate controller box, but, I understood that the hub motor had internal controller? What exactly have I gotten myself into? Any and all help will be appreciated. Tim