Replacing instrument panel, A/C lights, dashboard gauge, and climate control light bulbs with quality 12V LED illumination. 12V LED warning dashboard light for bright, reliable visibility. Each T4 Light Cover comes with Super LED bulbs for clear and consistent output. Very easy to install; designed to work on a standard 12V source. Key benefits and features Function: Provides readytoinstall LED illumination to worn or dim bulbs in instrument panels, A/C controls, dashboard gauges, and climate control panels. Compatibility: Fits vehicles that use T4 light covers and run on a 12V electrical system. Performance: LED bulbs deliver bright, steady light with low heat output for longer life compared with traditional bulbs. Convenience: Plugandplay installation with no complex wiring required. Durability: Built for reliable operation in automotive dashboards and control panels. What's included Each T4 Light Cover comes with Super LED bulbs. How to use Connect to a 12V power source in the vehicle's dashboard area and install in the corresponding T4 light cover sockets to illuminate instrument panels, A/C lights, dashboard gauges, and climate control indicators. Use scenarios Replacing worn or dim bulbs in an older car's instrument cluster to restore clear night visibility for speedometer, tachometer, and gauge readings. Upgrading the illumination of A/C and climate control panels for easier operation in lowlight driving conditions. Enhancing dashboard gauge readability in trucks or SUVs during night driving or offroad use, ensuring critical indicators remain legible. Performance and reliability considerations Provides bright, uniform illumination across multiple dashboard components while drawing minimal current. Designed to integrate with existing 12V vehicle electrical systems without additional wiring or adapters. Suitable for regular vehicle dashboards and control panels that use T4 light covers.