If you are looking for a reliable and efficient way to control electrical circuits in your vehicle, a 5 pin mini relay is a great solution. This type of relay is commonly used in automotive applications and can handle high current loads with ease. In this article, we will provide a comprehensive guide on 5 pin mini relay wiring diagram, including its components, installation, and troubleshooting.
What is a 5 Pin Mini Relay?
A mini relay is a type of electromagnetic switch that can handle and switch high power loads in a compact form factor. 5 pin mini relays are commonly used in automotive applications to control various devices such as lights, air conditioning, starter motors, fuel pumps, and electric fans. A 5 pin mini relay consists of five terminals that are labeled as follows:
| Terminal | Description |
|---|---|
| 85 | Ground (GND) |
| 86 | Trigger (TRG) |
| 87 | Normally Open (NO) |
| 87a | Normally Closed (NC) |
| 30 | Power (PWR) |
How to Wire a 5 Pin Mini Relay?
Wiring a 5 pin mini relay is a straightforward process that requires basic electrical skills and tools. The following steps will guide you through the process:
Step 1: Identify the Relay Terminals
Before you start wiring the relay, you need to identify its terminals. As mentioned earlier, a 5 pin mini relay has five terminals that are labeled as 85, 86, 87, 87a, and 30. You can refer to the wiring diagram of the relay to locate the terminals.
Step 2: Connect the Ground Terminal
Connect the ground terminal (85) of the relay to a suitable ground point in your vehicle. This can be the chassis or any other metal part that is connected to the battery negative terminal.
Step 3: Connect the Trigger Terminal
The trigger terminal (86) of the relay should be connected to a source of power that can activate the relay. This can be a switch, sensor, or any other device that can supply a voltage signal to trigger the relay.
Step 4: Connect the Power Terminal
The power terminal (30) of the relay should be connected to the positive terminal of the device you want to control. This can be a light, fan, motor, or any other electrical load that requires high current.
Step 5: Connect the Normally Open Terminal
The normally open terminal (87) of the relay should be connected to the positive terminal of the power source that supplies the device you want to control. This terminal will open (disconnect) the circuit when the relay is activated, allowing the device to turn on.
Step 6: Connect the Normally Closed Terminal
The normally closed terminal (87a) of the relay should be connected to the positive terminal of the power source that supplies the device you want to control. This terminal will close (connect) the circuit when the relay is not activated, allowing the device to turn off.
FAQ
Q: What is the maximum current rating of a 5 Pin Mini Relay?
A: The maximum current rating of a 5 Pin Mini Relay can vary depending on the manufacturer and application. However, most relays can handle current loads up to 30 amps.
Q: Can I use a 5 Pin Mini Relay to control multiple devices?
A: Yes, you can use a 5 Pin Mini Relay to control multiple devices by connecting them in parallel to the normally open (87) terminal of the relay. However, you need to make sure that the total current draw of the devices does not exceed the maximum current rating of the relay.
Q: How can I troubleshoot a faulty 5 Pin Mini Relay?
A: If your 5 Pin Mini Relay is not working properly, you can perform the following checks to determine if it is faulty:
- Check the voltage supply to the trigger terminal (86) of the relay
- Check the continuity of the relay coil using a multimeter
- Check the continuity of the normally open (87) and normally closed (87a) terminals of the relay using a multimeter
- Check the voltage supply to the power terminal (30) of the relay
If any of these checks fail, you may need to replace the relay with a new one.
Conclusion
A 5 Pin Mini Relay is a versatile and efficient device that can be used to control high current loads in your vehicle. Wiring a 5 Pin Mini Relay is a simple process that requires basic electrical skills and tools. We hope that this guide has provided you with useful information on 5 Pin Mini Relay Wiring Diagram, its components, installation, and troubleshooting.
