【Product Description】: The 12077866 Automotive Relay is designed as a reliable replacement for the 5810-0202 and 7866 relays, providing seamless compatibility with your vehicle's electrical system. With its 12VDC voltage rating and 35A current rating, this relay ensures efficient power distribution, enabling the proper functioning of various electrical components. Installing the 12077866 Automotive Relay is a breeze, thanks to its user-friendly design. You can easily replace your existing relay without the need for complex procedures or professional assistance. This saves you time and effort, allowing for a hassle-free installation process. With its enhanced power capabilities, the 12077866 Automotive Relay ensures optimal performance of electrical components in your vehicle. From powering lights and motors to controlling various systems, this relay provides reliable and efficient operation. The 12077866 Automotive Relay is compatible with a range of Buick, Cadillac, Chevrolet, and GMC models. Whether you have a sedan, SUV, or truck from these brands, this relay is designed to meet your vehicle's electrical needs, offering versatility and compatibility. Choose the 12077866 Automotive Relay for its reliable performance, easy installation, and cost-saving benefits. It is a high-quality replacement relay that ensures efficient power distribution and compatibility with various Buick, Cadillac, Chevrolet, and GMC vehicles, providing a reliable and cost-effective solution for your automotive electrical system.