This JD1912 SPST automotive relay harness is engineered for reliable performance in vehicles, boats, and motorcycles. Operating at 12V DC with a robust 40A contact load capacity, it features color-coded wires for foolproof installation and maintenance. The compact relay incorporates premium silver alloy contacts, delivering exceptional conductivity and a mechanical lifespan of up to 10 million operations. With its quick response time of 15ms for operation and 10ms for release, this relay ensures precise switching for critical vehicle systems. The unit maintains stable performance across temperatures from -55°F to 158°F, making it suitable for demanding automotive environments. Its sealed design and low power consumption of 1.8W make it an efficient choice for various applications, from power seats to auxiliary lighting. The relay's high-grade construction includes 100MΩ insulation resistance and impressive voltage withstand capabilities of 1000VAC between contacts and 1500VAC between contact and coil, ensuring long-term reliability in your vehicle's electrical system.