This high-capacity waterproof automotive relay is engineered to handle demanding electrical loads up to 100A, making it ideal for controlling heavy-duty automotive systems and accessories. The relay features SPDT (Single Pole Double Throw) contact configuration, offering versatile circuit control options with 1 Form A, 1 Form B, 1 Form C, and 2 Form A contact arrangements. Compatible with both 12V and 24V DC systems, this relay provides flexible integration across various vehicle types and applications. Its waterproof construction ensures reliable operation in harsh environments, protecting internal components from moisture, dust, and road debris. The compact design measures just 1.10 x 1.10 x 0.98 inches, allowing for easy installation in tight spaces. Built to withstand extreme temperatures ranging from -40°F to +257°F, this relay maintains consistent performance in both freezing winter conditions and scorching summer heat. The tri-clamp connection and socket mount design facilitate straightforward installation and secure mounting. An integrated LED indicator provides visual confirmation of relay status. Perfect for controlling high-current devices such as winches, lighting systems, cooling fans, and other automotive accessories that require robust switching capability.