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VIOFO 3 Wire ACC Hardwire Kit

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VIOFO 3 Wire ACC Hardwire Kit

The VIOFO 3-Wire ACC Hardwiring Kit is specifically designed for VIOFO dash cams, specifically with the VIOFO A129. It also fits the A119/A119S/A119 PRO dash cam, but ACC function will not be available. For more detailed instructions on how to specifically use this Hardwiring kit, check out our VIOFO 3-Wire ACC Hardwiring Kit Guide. We also have a general Hardwiring Fusebox guide available.

Note: Fuse Tap is not included by default, please choose your required Fuse Type Options at our Add-a-Fuse Kit. For all the tools you need to properly hardwire your dash cam into your vehicle, we would recommend purchasing the Essential BlackboxMyCar Install Package.

If you have any further questions, our product experts are here to help.

Product Details

This 3-Wire ACC Hardwiring Kit supports 3 parking recording modes: auto-event detection, time-lapse, and low bitrate recording. With ACC detection, the dash cam will switch to parking mode automatically if the vehicle engine is shut off. The dash cam will switch into normal recording when the vehicle engine is on. Length of cable: 4 meters / 13 feet.

Adjustable voltage low voltage protection function, it will cut power to your dash camera when detect the vehicle battery voltage is below the set number. It has four voltage options 11.8V, 12V, 12,2V, 12.4V.


What is Parking Mode?

Parking mode is offered on most of the dash cams available at BlackboxMyCar. While it is important to protect your vehicle while driving, it is just as important to have your vehicle protected while it is parked. When the dash cam is in parking mode, footage will only be saved when there is an impact and/or motion. Parking mode can be enabled with a hardwiring kit or a battery pack.

For more information on parking mode, click here.

What is a Hardwire Kit?

A hardwiring kit enables parking mode. It allows your dash cam to remain powered on even when the vehicle's ignition is turned off. Installation is a breeze as you will only need to find an accessory fuse, constant fuse, and a grounding point.

What is a Battery Pack?

Most customers purchase the battery pack to avoid using the vehicle’s battery to power their dash cam. The battery pack is charged by either being hardwired into an accessory fuse or by being plugged into one of the vehicle's 12-volt cigarette sockets. We recommend the hardwiring the battery pack as it charges the battery pack quicker.

For more information on Battery Packs, click here.

How much footage will my memory card store?

On average, a 2-channel dash cam writes 16GB/hour and a 1-channel dash cam writes about 8GB/hour.

Click here to see all the memory cards we carry.

Do I need a Rear Camera?

Accidents or events don't always happen at the front of the vehicle! Having a rear camera provides coverage for any events or accidents that may happen at the rear of the vehicle.

For more information on rear view cameras, click here.

Do I need a IR Rear Camera?

An IR camera is designed to record the interior of the vehicle in low light conditions. This option is very popular among rideshare drivers.

For more information on why rideshare drivers need dash cams, click here.

What is a CPL filter?

A CPL filter attaches to the dash cam lens to eliminate lens flares, light reflections, and windshield glares.

For more information on CPL filters, click here.

Where do I find the Latest Firmware?

Find the latest firmware and all downloadable content here.

Customer Reviews

Based on 15 reviews

Bought this hard wire kit for my dash cam. Worked perfect. Comes with no instructions. I found out the hard way that you have to connect both the red and the yellow to 12 volt power regardless of how you you set up the camera modes or the camera will not power up.

Hi Avelino, thank you for leaving a review and for purchasing from us! We're always here to help. If you have any questions, don't hesitate to reach out.


Product arrived within a week of ordering. Item has shipped in a matter of hours of order. Very satisfied.

Hi Gerardo, thanks for purchasing from us. Come back anytime!

Viofo A129 Pro Duo + Hardwire kit

Literally today I finally tackled installing this Dashcam. For what it's worth, I installed this on a 2020 Toyota CHR. No bad things to say about the installation process. I did find that the wire for the rear camera either is a thicker gauge or the insulation is thicker than the Blackvue 2ch camera I own. Not necessarily a problem but it did have me finding more "creative" ways to route the wiring to the front of the car. Aside from that it was pretty straight forward. The 3 wire kit was also easy to work with. I chose to order fuse taps and highly recommend doing that for anyone wanting to hardwire a Dashcam. It makes installing the wires into the fusebox a breeze. As far as the physical setup on the camera, I found interactions with the menu decent. I don't expect an amazing UI experience from a Dashcam but it gets the job done and unlike some reviews I had read, I did not have any trouble linking the app to my camera via Wi-Fi and making adjustments to the camera itself or the software settings. Overall, I would definitely recommend this camera to someone who is either upgrading from an older camera or anyone who likes a camera with a good frame rate and overall video quality. That's why I landed on this camera vs another Blackvue or a Thinkware Dashcam. Finally, one of the most important parts of this purchase for me, was Blackboxmycar's price match and amazing customer service. This is my second Dashcam purchase from them and I honestly will not order one from anywhere else after the service I have received. Shipping, even during "these times" was fast. I can't thank the folks here enough for caring about the products and services that they provide. Bottom line, for the price point, the Viofo A129 Pro Duo is a great choice and the installation process is simple provided you have the correct tools for the job.

Hi Matt, thanks for leaving a detailed review. We're so glad that our team was able to help you out and that you had a smooth time installing your dash cam into your vehicle. If you have any other questions, don't hesitate to reach out to us. We're here to help!