12 Volt Power Outlet Wiring Diagram

Having a 12-volt power outlet in your vehicle can be very useful for charging electronic devices or running small appliances. This article will provide you with a wiring diagram for a 12-volt power outlet and answer some frequently asked questions related to it.

Wiring Diagram

The wiring diagram for a 12-volt power outlet is relatively simple. You will need the following materials:

  • 12-volt power outlet
  • Wire cutters/strippers
  • Electrical tape
  • Fuse holder and fuse (15A)
  • Ring terminals
  • Rubber grommet
  • Drill and bit
  • Screwdriver

Here are the steps to follow:

  1. Choose a location for the power outlet and drill a hole in your vehicle’s dashboard or center console.
  2. Take the ring terminals and attach them to the power outlet’s positive and negative wires. Make sure to strip the wire beforehand.
  3. Run the wires through the hole you drilled, making sure to add the rubber grommet to protect the wires from rubbing against the sharp edges of the hole.
  4. Connect the positive wire to the fuse holder’s positive terminal and attach the negative wire to a grounding point on your vehicle.
  5. Put in a 15-amp fuse and attach the fuse holder to a place where it can be easily accessed, like under the dashboard or center console.

Once everything is connected, test the power outlet to make sure it is working correctly. You should be able to plug in your electronic device and charge it.


1. What is a 12-volt power outlet?

A 12-volt power outlet is a socket that can be installed in a vehicle and used to power or charge electronic devices or small appliances. It is usually located in the dashboard or center console of a car or truck.

2. What type of devices can be used with a 12-volt power outlet?

Most small electronic devices that use a 12-volt DC power source can be plugged into a 12-volt power outlet. This includes smartphones, tablets, GPS units, and small appliances like portable coolers or coffee makers.

3. How much power can a 12-volt power outlet provide?

A typical 12-volt power outlet can provide up to 180 watts of power. However, the exact amount of power will depend on the quality of the outlet and the wiring used to install it.

4. Why do I need a fuse for my 12-volt power outlet?

A fuse is important for safety reasons. It acts as a protective device, preventing the outlet from overheating and causing a fire or other damage. If too much current flows through the wires, the fuse will blow and cut off power to the outlet.

5. Can I install a 12-volt power outlet myself?

Yes, you can install a 12-volt power outlet yourself if you have basic knowledge of electrical wiring and the necessary tools and materials. However, if you are not sure about your ability to do this, it is recommended to have a professional do the installation for you.


Having a 12-volt power outlet in your vehicle can be very convenient, especially if you need to charge your electronic devices or run small appliances. By following the wiring diagram and instructions provided in this article, you can easily install a power outlet in your vehicle and enjoy its benefits.