The WM686 Heavy Current Starting Relay is a high-performance automotive relay engineered to handle the demanding electrical loads of modern vehicles and heavy-duty equipment. Rated at an impressive 120 amps, this relay delivers reliable switching power for starting systems and other high-current automotive applications. Compatible with both 12V and 24V electrical systems, it offers versatile fitment across a wide range of cars, trucks, and machinery. The rugged construction is built to withstand the harsh conditions found in engine compartments, including intense vibration, heat, and temperature fluctuations. Its durable housing and robust terminal connections ensure long-lasting performance through repeated starting cycles. The integrated mounting bracket makes installation straightforward, allowing for secure placement in tight spaces. Clearly labeled terminals (30, 86, 85, 87) simplify wiring and help ensure a correct and safe connection every time. Whether you are replacing a worn-out relay or upgrading your vehicle's electrical system, the WM686 is a dependable choice for high-current switching needs.