How to install viofo hk3

Installing the VIOFO HK3 hardwire kit can be a game-changer for your VIOFO dashcam, allowing it to remain powered 24/7, even when your car is off. This means continuous protection and peace of mind. Here’s a unique, step-by-step guide to help you install the VIOFO HK3 hardwire kit like a pro.

What You’ll Need

Before you dive into the installation, gather these essentials:

  • VIOFO HK3 hardwire kit
  • Compatible VIOFO dashcam
  • Fuse tap kit (usually comes with the hardware kit)
  • Multimeter (optional, for verifying power sources)
  • Trim removal tool or a flathead screwdriver
  • Pliers
  • Electrical tape or zip ties

Step 1: Getting Ready

  1. Park Safely:
    • Find a safe, well-lit spot to park your car. Turn off the engine and remove the keys from the ignition.
  2. Locate Your Fuse Box:
    • Consult your vehicle’s owner’s manual to find the fuse box. Common spots include under the dashboard, in the glove compartment, or in the engine bay.

Step 2: Identify the Right Fuses

  1. Choose the Fuses:
    • You’ll need two types of fuses: one for constant power (always on) and one for switched power (only on when the ignition is on). Your vehicle’s manual or the fuse box cover should help you identify these.
  2. Double-Check with a Multimeter:
    • Use a multimeter to verify you’ve picked the correct fuses for constant and switched power.

Step 3: Installing the Fuse Taps

  1. Remove the Fuses:
    • Carefully pull out the chosen fuses with a fuse puller or pliers.
  2. Attach the Fuse Taps:
    • Insert the removed fuses into the fuse taps from the hardwire kit. Make sure they’re snug.
  3. Insert Fuse Taps into the Fuse Box:
    • Place the fuse taps back into the fuse box slots. The constant power fuse tap goes into the slot for constant power, and the switched power fuse tap goes into the slot for switched power.

Step 4: Connecting the Hardwire Kit

  1. Route the Cables:
    • Run the hardwire kit cables from the fuse box to your dashcam’s mounting spot. Use a trim removal tool or flathead screwdriver to tuck the cables neatly along the edges of the dashboard and A-pillar.
  2. Ground the Wire:
    • Find a metal bolt or screw near the fuse box to use as a ground point. Loosen the bolt, attach the ground wire from the hardwire kit, and tighten the bolt securely.
  3. Connect the Power Wires:
    • Connect the red wire from the hardwire kit to the fuse tap with constant power.
    • Connect the yellow wire to the fuse tap with switched power.

Step 5: Wrapping Up the Installation

  1. Secure the Cables:
    • Use electrical tape or zip ties to tidy up any loose cables and make sure they’re not in the way of any car operations.
  2. Plug in Your Dashcam:
    • Connect the hardwire kit’s output cable to your dashcam.
  3. Test Everything:
    • Turn on your car to make sure the dashcam powers on with the ignition and stays powered when the ignition is off. Adjust any settings on your dashcam as needed.

Step 6: Finishing Touches

  1. Replace Trim Pieces:
    • Put back any trim pieces or panels you removed while routing the cables.
  2. Final Check:
    • Ensure all connections are tight and cables are neatly tucked away.

Unique Tips for a Smooth Installation

  • Stay Organized:
    • Keeping all your tools and parts organized can make the process smoother.
  • Fuse Diagram:
    • A specific fuse diagram for your car can be a lifesaver in identifying the right fuses.
  • Test as You Go:
    • Periodically test connections with a multimeter to catch any issues early.


Installing the VIOFO HK3 hardwire kit adds tremendous value to your dashcam setup, ensuring it’s always ready to record. By following this unique, hands-on guide, you can achieve a clean, professional installation. Remember, consulting your vehicle’s manual and, if needed, seeking professional help can prevent mishaps. With careful attention to detail and a methodical approach, your dashcam will be primed to capture every critical moment on the road.

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