This professional-grade 5-piece automotive relay kit comes equipped with everything needed for reliable electrical switching in vehicles. Each relay features a robust 40A current capacity and operates on 12V systems, making it ideal for controlling high-draw components like lights, fans, and other automotive accessories. The SPDT (Single Pole Double Throw) 5-pin configuration offers versatile control options, while the included pre-wired socket harness with color-coded wires simplifies installation. Constructed from durable ABS material, these relays are built to withstand the harsh conditions found in engine compartments. The kit includes copper terminals for superior conductivity and secure connections. Each relay is clearly marked with specifications (JD1914 12V 40A) and features a mounting tab for secure placement. Perfect for both repair work and new installations in automotive electrical systems, these relays provide dependable switching performance for various vehicle applications.