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how to wire a relay vcc ground

how to wire a relay vcc ground

How to Wire a Relay VCC Ground

Wiring a relay VCC Ground allows you to control a variety of electrical devices from one location. A relay is an electrically operated switch that can be used to control and automate a wide range of electrical devices. With proper wiring, a relay can be used to switch a high voltage or high current electrical device on and off, providing more versatility and control than a conventional switch. Here’s how to wire a relay VCC Ground:

Step 1: Gather Required Materials

Before you can begin wiring your relay, you need to gather the necessary materials:

  • Relay
  • Wire
  • Screwdriver
  • Voltmeter or Test Light

Step 2: Connect the Relay

Once you have gathered the materials, you can now begin wiring your relay. Start by connecting the Positive wire from the device you’re controlling to the relay’s Positive (VCC) terminal. Then, connect the ground wire from the device to the relay’s Ground terminal.

Step 3: Test the Connection

Once the wires have been connected, you can now verify the connection with a voltmeter or test light. Connect the voltmeter or test light to the Positive (VCC) terminal and the Ground terminal to confirm the connection is working correctly.

Step 4: Verify the Connection

Finally, once the connection has been verified, you can now test the relay to make sure it’s operating correctly. You can do this by using a multimeter to measure the current coming into the relay’s Positive (VCC) terminal and the current going out of the Ground terminal. If the current readings are the same, then the connection is working properly and the relay is ready to be used.


Wiring a relay VCC Ground is a simple and straightforward process that can be done with just a few materials. With proper wiring, a relay can be used to control and automate a wide range of devices with ease. Be sure to follow the steps provided in this article to ensure your connection is working correctly and that your relay is ready for use.