The WM686 Heavy Current Starting Relay is a robust automotive relay designed to handle the demanding electrical requirements of modern vehicles. Rated at 120 amps and compatible with both 12V and 24V DC systems, this relay delivers reliable performance for heavy-duty starting applications. Its electromagnetic switch design ensures consistent operation even under high electrical loads, making it an ideal choice for cars, trucks, and other automotive applications. The compact, durable construction features sturdy bolt terminals for secure wiring connections, and the integrated mounting bracket with a pre-drilled hole allows for straightforward installation in tight engine bay spaces. Clearly labeled terminal pins (30, 86, 85, 87) make wiring setup straightforward for both professionals and experienced DIYers. Whether you are upgrading your vehicle's electrical system or replacing a faulty relay, the WM686 offers the high-current capacity and dual-voltage versatility needed to get the job done right.