LCD Car OBD2 HUD Projector Speed RPM Water Temp Display Digital Instument with Warning Function Item Type: OBD2 HUD Display Material: Electronic ComponentFitment:Fit for petrol vehicle with standard OBD‑II protocol, especially for vehicle without water temperature gauge, speedometer and fuel consumption meter. Vehicles covers US 12V cars which made after 1996.01.01; EU 12V petrol cars which made after 2002.01.01; EU 12V diesel cars which made after 2004.01.01; Asia 12V cars which made after 2009.01.01. Function Description: 3. The LCD instrument can support multiple meters in series. If you need to display different screens and data, you can purchase multiple series for use (it is recommended that no more than 5 meters are connected in series). How e: 1. Before installation, you need to prepare LCD instrument and OBD cable. 2. Find the car OBD interface and connect the OBD cable to the meter. 3. Start the engine, and then turn on the power switch. 4. The meter is powered on for self-check and displays the boot screen. After the self-check is completed, it enters the working interface and the installation is complete. 5. Tear off the adhesive film at the bottom of the LCD meter, and choose a suitable position to fix it according to your sight.