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 controllers may result in throttle malfunction. Display wiring instructions (match wiring colors during installation): Red line: + (power supply voltage) Black: - White: Controller switch control line Blue: RXD signal line Yellow: TXD signal line Green: Acceleration signal line Note: Instrument setting for 24V/36V voltage – Long press the middle button for 3 seconds to switch mode. Use up and down buttons to increase or decrease gears. Press up and down buttons simultaneously to enter settings interface. Press middle button to toggle settings, use up and down buttons to adjust parameters. Press up and down buttons simultaneously to save settings. Material: Plastic Color: Black Package Contents: 1 x Scooter Display Note: Lighting and display differences may cause slight color variations between the image and actual item. Measurement error allowance is +/- 1-3 cm.