Fitment: Fit for wind turbine scooter, small electric car, mechanical equipment, electric motorcycle DIY engine kit, cart, electric bike, go kart, electric tricycle, DIY engine system, bike parts, even lawn mower and more machinery equipment and so on. Specification: Item Type: Brush Motor Speed Controller Set Material: Aluminum alloy, rubber Mounting Hole Size: M4 Rated Voltage of Controller: DC36V Rated Power of Controller: 500W Throttle Grip: 1-4V Lines: 8 groups(battery, motor, charging port, power, brake light, brake, speed control grip, electric door lock) Package List: 1 x Brush Motor Speed Controller 1 x Electric Door Lock 2 x Key 1 x Throttle Grip Note: The battery line of the thick red line is positive, the thick black line is negative, the motor line of the thick blue line is positive, the thick yellow line is negative.