HAOYI LCD Display Device for 5/5.5 Inches Size. This display is compatible only with 36V 12A controller or JIPIN controller. Please confirm the controller model before purchasing. Incompatible controller models may result in throttle malfunction. Display wiring instructions (match wiring by color during installation): - Red line: + (power supply voltage) - Black line: - - White line: Controller switch control line - Blue line: RXD signal line - Yellow line: TXD signal line - Green line: Acceleration signal line Note: To switch between 24V/36V voltage settings, long press the middle button for 3 seconds. Use the up and down buttons to increase or decrease gears. Press both up and down buttons simultaneously to enter the settings interface. Press the middle button to cycle through settings, use up and down buttons to adjust parameters. Press both up and down buttons simultaneously to save settings. Material: Plastic Color: Black Package Contents: 1 x Scooter Display Note: Lighting and monitor differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.