Flasher relays are essential components in automotive electrical systems. They control various signals that activate the lights on a vehicle, such as turn signals, hazard lights, and brake lights. A 5-pin flasher relay is one of the most common types used in vehicles, and understanding its wiring diagram is important for troubleshooting and repairing electrical problems. In this article, we will dive into the basics of 5 pin flasher relay wiring diagram and provide a complete guide to help you understand how to wire a 5 pin flasher relay.
Introduction to 5 Pin Flasher Relay
A 5-pin flasher relay controls the flashing rate of turn signals and hazard lights. It is generally used in automobiles and other vehicles, but can also be found in other systems that require flashing lights. The five pins on a 5-pin flasher relay are numbered 31, 49, 49a, 85, and 86.
The pins are usually arranged in a circular pattern, with pin 31 at the top, pin 49 next to it, pin 49a below it, and pins 85 and 86 at the bottom. The pins are numbered in a clockwise direction, and the numbering system may vary depending on the manufacturer.
Purpose of a 5 Pin Flasher Relay
The purpose of a 5 pin flasher relay is to control the flashing rate of the turn signal and hazard lights. When the turn signal or hazard switch is activated, the relay sends an electrical signal to the flashing lights, causing them to blink at a specific rate. This creates a visual cue to other drivers to indicate the intended direction or actions of the vehicle.
Without a properly functioning flasher relay, the turn signals and hazard lights on a vehicle may not work at all, or may blink too fast or too slow. This can lead to confusion and potentially dangerous situations on the road.
5 Pin Flasher Relay Wiring Diagram
The 5 pin flasher relay wiring diagram consists of five pins arranged in a specific pattern. Each pin serves a different function in controlling the electrical signals that activate the turn signals and hazard lights. Here is the wiring diagram for a 5-pin flasher relay:
| Pin Number | Description |
|---|---|
| Pin 31 | Ground |
| Pin 49 | Power (+) |
| Pin 49a | Power (+) |
| Pin 85 | Switched Power (+) |
| Pin 86 | Signal (-) |
The wiring diagram shows that pin 31 is connected to ground, while pins 49 and 49a are connected to power (+). Pin 85 is connected to a switched power source, such as the ignition switch, and pin 86 is connected to the signal (-) wire from the turn signal or hazard switch.
When the switch is activated, it sends a signal to pin 86, completing the circuit between pins 85 and 86. This activates the relay, which sends an electrical signal to the flashing lights, causing them to blink at a specific rate.
How to Wire a 5 Pin Flasher Relay
Wiring a 5 pin flasher relay is a relatively simple process, but it is important to follow the correct wiring diagram to ensure proper function. Here are the steps to wire a 5 pin flasher relay:
Step 1: Locate the Flasher Relay
The first step is to locate the flasher relay on the vehicle. It is usually located under the dashboard on the driver’s side or in the engine compartment near the fuse box. Consult the vehicle’s owner’s manual or service manual for specific instructions.
Step 2: Remove the Old Relay
Once you have located the flasher relay, remove the old relay by gently pulling it out of its socket. Be careful not to damage any wires or connectors during this process.
Step 3: Identify the Wiring Diagram
Identify the wiring diagram for the 5 pin flasher relay you are installing. The diagram should be included with the new relay or can be found in the vehicle’s owner’s manual or service manual.
Step 4: Connect the Wires
Connect the wires to the appropriate pins on the new flasher relay according to the wiring diagram. Use a wire stripper, crimping tool, and electrical connectors to make secure connections. Be sure to use the correct gauge wire for each connection and ensure that all connections are properly insulated.
Step 5: Test the Relay
Test the new flasher relay by activating the turn signals or hazard lights. If they blink at the correct rate, the relay is properly installed and functioning. If they do not work or blink too fast or too slow, recheck the wiring connections and try again.
FAQs
What is a flasher relay?
A flasher relay is an electrical component that controls the rate of flashing of turn signals, hazard lights, and other flashing lights on a vehicle or other system.
What are the pins on a 5 pin flasher relay?
The five pins on a 5 pin flasher relay are numbered 31, 49, 49a, 85, and 86. Each pin serves a different function in controlling the electrical signals that activate the flashing lights.
Why is it important to understand the wiring diagram for a 5 pin flasher relay?
Understanding the wiring diagram for a 5 pin flasher relay is important for troubleshooting and repairing electrical problems in a vehicle or other system. It ensures that the relay is properly wired and functioning, which is essential for the safety and operation of the vehicle.
Can I install a 5 pin flasher relay myself?
Yes, you can install a 5 pin flasher relay yourself if you have basic electrical knowledge and the necessary tools. However, if you are not comfortable with electrical work, it is recommended that you have a qualified technician install the relay for you.
What are some common signs of a faulty flasher relay?
Some common signs of a faulty flasher relay include turn signals or hazard lights that do not work at all, lights that blink too fast or too slow, or a buzzing sound coming from the relay. If you notice any of these symptoms, it is important to have the relay checked and replaced if necessary.
Conclusion
A 5 pin flasher relay is a critical component in the electrical system of a vehicle. Understanding its wiring diagram and how to properly wire it is essential for troubleshooting and repairing electrical problems. By following the steps outlined in this guide, you can successfully wire a 5 pin flasher relay and ensure that your turn signals and hazard lights are functioning properly.
