4 Pin Motorcycle Starter Relay Wiring Diagram
Motorcycles have been a popular mode of transportation for decades. They are relatively cheaper, easy to maneuver and provide a sense of freedom that other vehicles don't. However, like any other machine, motorcycles also need regular maintenance and repairs. One of the common issues that motorcycle owners face is the starting problem. A faulty starter relay can be the reason behind it. In this article, we will discuss the 4-pin motorcycle starter relay wiring diagram that can help you diagnose and fix the issue.
What is a Starter Relay?
A starter relay is an electrical component that connects the battery to the starter motor. It helps to complete the circuit and provides a high current to the starter motor, which in turn starts the engine. The relay is triggered by the ignition switch, which sends an electrical signal to the relay. The relay then closes the circuit and allows the current to flow from the battery to the starter motor.
4 Pin Starter Relay Wiring Diagram
There are two types of starter relay wiring diagrams - 3-pin and 4-pin. In this article, we will discuss the 4-pin starter relay wiring diagram. The 4-pin starter relay has four terminals - two for the coil and two for the contacts. The coil terminals are usually marked as positive and negative, while the contact terminals are marked as normally open (NO) and normally closed (NC).
The following is the 4-pin motorcycle starter relay wiring diagram:
- Terminal 1 - Positive Coil Terminal
- Terminal 2 - Negative Coil Terminal
- Terminal 3 - Normally Open Contact Terminal
- Terminal 4 - Normally Closed Contact Terminal
The positive coil terminal is connected to the ignition switch, while the negative coil terminal is connected to the ground. The normally open contact terminal is connected to the starter motor, while the normally closed contact terminal is connected to the battery. When the ignition switch is turned on, it sends an electrical signal to the positive coil terminal, which triggers the relay. The relay then closes the circuit between the normally open contact terminal and the positive coil terminal, which provides power to the starter motor and starts the engine.
How to Test a Starter Relay?
If you are facing starting problems with your motorcycle, you can test the starter relay to determine whether it is faulty or not. Here are the steps:
- Step 1: Locate the starter relay. It is usually located near the battery or the fuse box.
- Step 2: Disconnect the battery and remove the starter relay from its socket.
- Step 3: Using a multimeter, check the resistance between the positive and negative coil terminals. The resistance should be between 50 - 200 ohms. If the resistance is too high or too low, the relay is faulty and needs to be replaced.
- Step 4: Check the continuity between the normally open and normally closed contact terminals. There should be no continuity between these two terminals when the relay is not triggered. If there is continuity, the relay is faulty and needs to be replaced.
- Step 5: Check the continuity between the positive coil terminal and the normally open contact terminal. There should be continuity between these two terminals when the relay is triggered. If there is no continuity, the relay is faulty and needs to be replaced.
Conclusion
The 4-pin motorcycle starter relay wiring diagram is an essential tool for any motorcycle owner. It can help you diagnose and fix the starting problem by understanding how the relay works and how to test it. If you are facing starting problems with your motorcycle, follow the testing steps mentioned above and replace the faulty relay if necessary. Regular maintenance and timely repairs can ensure a smooth and safe riding experience.
