Mr. Gasket waterproof relays are ideal for use on electric fuel pumps, water pumps, cooling fans, off-road lights, and any other application that is exposed to muddy or wet conditions. This relay handles 40 amps momentary and 30 amps for continuous use. The pigtail harness has 7 inch long leads with heavy-duty 12 & 18 gauge wire. The connector has the wires molded-in rubber and a gasket for a leak-proof seal. Ideal for use on marine applications and vehicles that are power-washed out (Jeeps, 4x4 Trucks, UTV's, and dirt track race cars).