ebike conversion kit

Hi! I'm new to the e-bike world and I'm attempting to build an ebike, I feel like I've done way too much research with everything and confused myself so maybe I could grab some help? Desired max speed on level ground: max 60kph Desired max range: 80km at 40kph I don't have a preferred wheel...

I bought an ebike conversion kit, 48v 1000 watt rear wheel with LCD. I removed the pins from a wire connector from the brushless hub motor to the controller. When I replaced the pins in the connector, I messed up. I switched red and black and on the 3 pin row yellow and blue. When i...