This heavy duty automotive relay is engineered to handle high current power starting applications with exceptional reliability. Rated at 12V and 200A, this TN686 model relay provides robust switching capability for demanding automotive electrical systems. The relay features a durable black housing with clearly marked wiring diagram and terminal connections (pins 30, 86, 85, 87) for straightforward installation. Built with heavy duty copper terminals and secure bolt-down connections, it ensures low resistance and dependable current flow even under extreme loads. The compact design includes a convenient mounting bracket with a hole for easy installation in various vehicle configurations. Designed to withstand harsh automotive environments, this relay delivers consistent performance across a wide temperature range. Whether you're upgrading your vehicle's starting system, installing high-power accessories, or replacing a worn relay, this high current relay provides the durability and performance you need. The rugged construction and quality components make it suitable for cars, trucks, RVs, boats, and other heavy duty applications requiring reliable high amperage switching.