controller repair

So I got a new ebike to work on, but there's a downside. I can't find the controller's wiring diagram anywhere onllne. I originally found the bike online called "MacWheel Ranger". This one looks to be a 350w model. I can't find what wires go where. I got this bike 4 days ago and i've been...

Hi, I'm a handy person who is in search for practical knowledge on a couple of intriguing things: The first and for most item is a controller from ebikeling 48v 35a 1500watt. I am most interested in and wishing to learn is about the board itself what the noted points are for? How can I test...