This automotive relay set includes 5 high-performance 5-pin SPDT relays rated at 40A, designed to handle demanding electrical circuits in your vehicle. Each relay operates on either 12V or 24V systems, making them versatile for various automotive applications including lighting systems, fuel pumps, cooling fans, and other high-current accessories. The relays feature durable ABS construction that provides excellent heat resistance and long-lasting performance in harsh automotive environments. Each unit comes pre-wired with a convenient socket harness featuring color-coded wires (black, red, blue, yellow, and white) with copper terminals for reliable conductivity and easy plug-and-play installation. The 5-pin SPDT (Single Pole Double Throw) configuration offers flexible on/off control, allowing you to create multiple wiring configurations to suit your specific needs. The integrated mounting bracket with a hole makes installation straightforward and secure. Whether you're upgrading your vehicle's electrical system, adding aftermarket accessories, or replacing worn-out relays, this pack provides reliable switching performance you can count on.