12V 30A 5-Prongs high current welded connections for reliability High quality composite housings protect against harsh temperatures and severe underhood conditions With contacts in brass or copper where intended for prolonged use All parts are manufactured to strict quality requirements. Relays play an important role in the ever-increasing amount of electronics in automobiles. Product Description Vehicle Electronics Relays are designed and manufactured to meet or exceed manufacturers original equipment specifications for performance and durability. Multi-purpose relays are used to control electrical circuits for components on a vehicle that have a high amperage load, such as headlights , fuel pumps and cooling fans. A faulty or failed multi-purpose relay causes a component to fail or function intermittently. Depending on circuit is affected, a failed Multi-Purpose Relay could cause a no-start condition, vehicle malfunction and impaired safety systems. When diagnosing a failed Multi-Purpose Relay the corresponding fuse should be checked as well as verifying that the component amperage draw on the circuit is within factory specifications