How to Wire 3rd Brake Light on Truck Cap

If you own a truck with a cap or a topper, you might want to add a third brake light to increase visibility and safety on the road. In this article, we will guide you through the steps on how to wire a 3rd brake light on a truck cap. It’s a relatively easy DIY project that you can complete in a few hours, even if you don’t have advanced technical skills.

Step 1: Choose the Right 3rd Brake Light

The first thing you need to do is to choose the right 3rd brake light for your truck cap. You can find a variety of options online or at your local auto parts store. Make sure the brake light you choose is compatible with your truck’s make and model, and that it meets the legal requirements for brake lights in your state.

Step 2: Gather the Tools and Materials

Once you have your 3rd brake light, you need to gather the necessary tools and materials to complete the installation. You will need wire strippers, crimping pliers, electrical tape, a drill, a drill bit, and screws. You may also need a voltage tester to check the wiring.

Step 3: Install the Brake Light

The next step is to install the brake light on your truck cap. Locate the spot where you want to mount the brake light and drill holes for the screws. Then, attach the brake light to the cap using the screws provided. Make sure the brake light is securely attached and level.

Step 4: Run the Wiring

Now it’s time to run the wiring for the brake light. Find the wiring harness for the brake lights on your truck and locate the wire that corresponds to the center brake light. Use wire strippers to remove a small section of the insulation from this wire, and then crimp a wire connector onto the end of the wire from your brake light.

Run the wire from the brake light through the cap and down to the truck’s wiring harness. Use electrical tape to secure the wire to the cap and prevent it from rubbing against any sharp edges. Connect the wire from the brake light to the wire from the truck’s wiring harness using a wire connector.

Step 5: Test the Brake Light

Before you complete the installation, it’s important to test the brake light to make sure it’s working properly. Turn on your truck’s ignition and press the brake pedal. Check to see if the new brake light illuminates when you press the brake pedal. If it does, you’re ready to complete the installation.

Step 6: Secure the Wiring

Once you’ve confirmed that the brake light is working, secure the wiring using zip ties or electrical tape. Make sure the wiring is not loose and that it’s not in danger of getting damaged by moving parts or sharp edges.

Step 7: Enjoy Your New Brake Light

With the wiring secured and the brake light tested, you’re ready to enjoy your new 3rd brake light on your truck cap. Not only will it increase your visibility and safety on the road, but it will also give your truck a more customized look.

Conclusion

Wiring a 3rd brake light on a truck cap is a simple DIY project that any truck owner can complete. By following these easy steps, you can add an extra level of safety to your vehicle and improve your visibility on the road. With the right tools and materials, you can have your new brake light installed and working in just a few hours.

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