Automotive Electrical Relay

A relay can be used to power a new circuit with very little added current draw on the original wiring.

Automotive electrical relay.

They employ an electromagnet device to mechanically switch and make or break an electrical circuit the type most commonly used in the auto industry is called a standard relay or a mini relay. Using a relay keeps the higher voltage out of the passenger compartment of the vehicle and is just less taxing on your vehicle s electrical system in general. Automotive relays are for use in 12 volt electrical systems. They are found in all types of vehicles.

Our relays have either 5 contacts or 4 contacts. In the painless performance electric fan relay kit we got from speedway motors a circuit breaker is supplied if you wanted to safely get power directly from the battery. Online led store 6 pack bosch style 5 pin 12v relay kit interlocking harness socket holder 14 awg hot wires spdt 30 40 amp 12 volt automotive relays for auto fan cars by online led store 12 45 12. Auto parts electrical and.

The terminals on the outside of a 4 or 5 pin mini relay are marked with numbers as shown below. The terminal numberings found on a relay body are taken from din 72552 which is a german automotive industry standard that has been widely adopted and allocates a numeric code to various types of electrical terminals found in vehicles. Relays with 5 contacts are called changeover relays and are capable of switching between two separate. Whether you need a refreshed fuel pump relay starter relay horn relay or anything in between we have you covered.

An automotive relay is an electronically operated switch. Relays are used when you need to switch higher currents than a switch can handle or when you want to isolate an electrical circuit. Every circuit added to a modern car should be run through an automotive relay. What happens inside a relay isn t magic but it is important.

Understanding how the relay works will help with diagnosis and modifications to vehicle systems. What is a relay. If something were to fail and short the chances of an interior fire are significantly reduced if a relay is utilized to allow the higher voltage switching occur in the engine compartment. The factory wiring in modern cars is light gauge and is not designed for additional loads.