Setting Up with the VIOFO 3-Wire Hardwiring Kit

The Standard Hardwire Kit Option for VIOFO Dash Cams

Setting Up with the VIOFO 3-Wire Hardwiring Kit for Your VIOFO Dash Cam

Hardwiring your dash cam to the vehicle’s fusebox is one of the most common installation methods to power on your dash cam when the vehicle is off, thus offering parking-mode recording (for dash cams that do have parking-mode recording feature).

Hardwiring kits are available for our dash cams and has become widely popular over the years for drivers who wants protection for their vehicles 24/7. They provide power to your dash cam, and allow your dash cam to be your silent witness when you're not there.

The VIOFO 3 Wire Hardwire Kit is designed for VIOFO dash cams, most importantly the VIOFO A129. It has various functions, but primarily is used to provide power to your dash cam through the fuse box when the vehicle is turned off. The module itself is powered through the vehicle's fuse box and detects your battery's voltage when the vehicle is turned off, so it knows when to cut off power to the dash cam to save your vehicle’s battery from dying.

What You'll Need

Hardwiring Kit

Socket Wrench

Essential Kit

Electrical Tape

Needle Nose Pliers

Owner's Manual


Attaching the Wires

Similar to how we have laid out our instructions within our step-by-step hardwiring guide, the red wire attaches to a constant fuse, the yellow wire attaches to an ignition-switched fuse and the black wire attaches to a ground bolt.

The general instructions for hardwiring remains the same here: we recommend the fuses be between 10-30A and to refer to the vehicle owner’s manual so as to avoid fuses that pertain to safety features.

  • The ACC (ignition-switched) detection feature will allow the dash cam to switch to parking mode automatically if the vehicle’s engine turns off and switch back to normal recording after the vehicle’s engine turns on. Please be sure the cable is connected to the camera directly and not through the GPS mount.

Voltage Cut-off Settings

The VIOFO 3 Wire Hardwire Kit has adjustable low voltage protection levels, it will cut power to your dash camera when it detects the vehicle battery voltage is below the set number. The cutoff levels are:

  • 11.8V
  • 12V
  • 12.2V
  • 12.4V
  • For most vehicles, 12.0V should provide about 6-8 hours of power after the car turns off and still offers enough juice for the vehicle to start up again. During very cold weather, we recommend setting this to 12.4V.

Explore Our eLearning Guides

Dash Cam Buyer's Guide

New to dash cams? Try out our dash cam buyer's guide to start your journey.

Dash Cam Accessories

Want more out of your dash cam? Find an accessory that's right for you.

Our Best Dash Cams

Make great purchasing decisions with the right dash cam for you.

Installation Guides

Let us show you how to install your own dash cam & accessories.


Got More Questions?

Not to fret, our in-house product experts are here to help. We have spent years curating helpful content and video guides, helping customers with their dash cams, but we understand that we can always do better. Contact us using the form below and we'll get back to you as soon as we can. We love what we do, because we're here to help you make the most informed purchasing decision.