How to Use: Controller Wiring Instructions: The controller can be connected to the corresponding line interface to realize the function. Just define the wiring according to the controller wire color 1. Black single large end wire: waterproof motor wire 2. Red and black single large end wire: power cord 3. Red, blue, black, green and yellow single row five wire port: instrument cable 4. Red and blue wires (two): power off brake lever wire 5. Red and black lines: finger throttle line 6. Brown black yellow wire: power assisted sensor wire For specific instructions, please refer to the manual. Specification: Item Type: Lithium Battery Modification Controller Kit Material: Aluminum Alloy + Plastic Controller Box Size: Approx. 81x52x31mm / 3.2x2.0x1.2in Controller Type: Controller Controller Connector Type: Waterproof Connector (Except Motor Waterproof Connector) Controller Rated Voltage: DC 36V/48V Controller Rated Current: 7A Controller Maximum Current: 15±1A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Controller Low Voltage : DC 30/40±0.5V Applicable Motor Power: 250W Color: As Pictures Shown Weight: Approx. 617g / 21.8oz Instrument Function Description: Up button, switch button, down button, one way time, total travel time, riding speed (metric system), riding speed (imperial system), maximum speed, average speed, power assisted sensor sign, cadence dispaly, distance (metric), distance (inch), travel distance, total distance, battery voltage, backlight and headlights, brake display, function display, power assisted sensor start display, throttle opening, 6km/h thrust assist system, motor temperature (?/?), motor power, ambient temperature (?/?)