Relays are essential components in the automotive industry as they allow control over high current circuits. A 5 blade relay is a type of relay that has five terminals on it. These relays are commonly used in cars, trucks, and other motor vehicles for controlling various electrical systems such as lights, horn, and fuel pump. In this article, we will discuss the 5 blade relay wiring diagram and provide you with all the information you need to know about this important component.
What is a 5 Blade Relay?
A 5 blade relay is an electromagnetic switch that is used to control high current circuits. It consists of a coil, contacts, and terminals. The coil is energized when a small electrical current flows through it, and this magnetic force pulls the contacts together, closing the circuit. When the coil is de-energized, the contacts are released, and the circuit is opened.
The 5 blade relay has five terminals that are labeled differently for specific purposes. Terminal 30 is the power input, terminal 85 is the coil ground, terminal 86 is the coil power, and terminals 87 and 87a are the output terminals.
5 Blade Relay Wiring Diagram
Wiring a 5 blade relay is a straightforward process. Below is a step-by-step guide on how to wire a 5 blade relay:
| Terminal | Wire Color | Purpose |
|---|---|---|
| 30 | Red | Power Input |
| 85 | Black | Coil Ground |
| 86 | Blue | Coil Power |
| 87 | Orange | Output Terminal 1 |
| 87a | Yellow | Output Terminal 2 |
Connect the terminal wires to their respective connections. Ensure that the wires are properly secured to avoid any short circuits. Once the wiring is complete, the relay is ready for use.
FAQ
What is the purpose of a 5 blade relay?
A 5 blade relay is used to control high current circuits in the automotive industry. It is commonly used to control various electrical systems such as lights, horn, and fuel pump.
How do you test a 5 blade relay?
To test a 5 blade relay, use a multimeter to check the continuity of the coil and the contacts. Apply power to the coil and check if the contacts are closed. If the contacts do not close, the relay may be faulty and needs to be replaced.
Can a 5 blade relay be used to control multiple circuits?
Yes, a 5 blade relay can be used to control multiple circuits. However, it is important to ensure that the relay is rated for the total current of all the circuits being controlled.
How can you tell if a 5 blade relay is bad?
If a 5 blade relay is bad, you may experience various issues such as dim or flickering lights, non-functioning electrical systems, or a clicking sound from the relay. To diagnose the issue, test the relay using a multimeter or replace it with a new one.
Is it necessary to use a 5 blade relay in an electrical system?
It is not always necessary to use a 5 blade relay in an electrical system. However, it is recommended in high current circuits to ensure proper control and safety.
In conclusion, a 5 blade relay is an essential component in the automotive industry for controlling high current circuits. Wiring a 5 blade relay is a simple process, and it is important to ensure that the wiring is correct to avoid any short circuits. With this guide, you now have all the information you need to know about a 5 blade relay wiring diagram.
