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SKU VF-HK3

VIOFO Mini USB HK3 3-Wire Hardwire Kit

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Original price $29.99 - Original price $29.99
Original price $29.99
$29.99 CAD
$29.99 - $29.99
Current price $29.99 CAD
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VIOFO HK3 Mini-USB Hardwire Kit

Connect a compatible VIOFO dash cam to the fuse box for driving and parking recording. The HK3 supplies power through a 4m cable, approximately 13.1ft, and uses an accessory-power signal to tell the camera when the ignition is off. Its adjustable voltage cut-off stops supplying power when the vehicle battery reaches the selected threshold.

Parking Wiring

Voltage Cut-Off

Mini-USB HK3

4m Cable

Hardwired power for A119 V3 and A129

Choose the HK3 for A119 V3, A129 Duo, A129 Duo IR, A129 Plus Duo or A129 Pro Duo. Its mini-USB connection is different from the USB-C kits used by newer VIOFO cameras. Check the model and connector before routing the cable behind trim.

The three connections are red for constant battery power, yellow for switched accessory power and black for ground. Use a suitable circuit tester to identify circuits and choose an Add-a-Fuse kit that matches the vehicle. The Essential BlackboxMyCar Install Package is another option when you need installation tools.

Select a parking mode in the camera settings. Available recording modes depend on the camera; the HK3 supplies power and the ignition signal rather than recording video itself. Battery condition, camera demand and the selected cut-off affect how long parking recording can continue.

VIOFO HK3 kit with mini-USB camera connector, voltage cut-off module and three power wires
What's Included
  • 1 VIOFO HK3 three-wire hardwire kit with mini-USB camera connector
Specifications
Connection (Camera/Device End) Mini-USB
Cable Length 4m (approximately 13.1ft)
Compatibility A119 V3; A129 Duo, Duo IR, Plus Duo and Pro Duo
Retailer SKU VF-HK3
Vehicle power 12V or 24V system
12V cut-off settings 11.8V, 12.0V, 12.2V or 12.4V
Wire connections Red: constant power; yellow: accessory power; black: ground
Frequently Asked Questions

Which cameras fit the HK3?

Use the mini-USB HK3 with A119 V3, A129 Duo, A129 Duo IR, A129 Plus Duo or A129 Pro Duo. Other VIOFO models need their own compatibility check.

Does this fit A119 Mini 2 or A139?

No. Those cameras use USB-C hardwire kits. A shared brand name does not make the HK3 connector interchangeable.

How long is the cable?

The cable is 4m, approximately 13.1ft. Measure the actual route from the fuse box to the camera, including the path around trim, before installation.

Does the HK3 enable parking recording?

It provides the power and accessory signal a supported camera needs. Enable parking mode in the camera and follow its instructions. Auto-event, time-lapse and low-bitrate options depend on the camera model and settings.

Can it guarantee overnight recording?

No. Parking runtime varies with battery charge and condition, temperature, camera demand and the cut-off setting. The kit stops supplying power when the selected voltage threshold is reached.

Can I use it in a 24V vehicle?

Yes. The HK3 supports 12V and 24V vehicle systems. Use the settings marked for the vehicle voltage and follow the kit instructions.

Are fuse taps included?

Not by default. Match an Add-a-Fuse kit to the vehicle fuse type and selected circuits. The camera model does not determine which fuse tap fits.

Where do the three wires connect?

Red connects to a suitable constant-power circuit, yellow to a suitable switched accessory circuit and black to ground. Check both ignition states and follow the vehicle and kit instructions; keep wiring clear of airbags and moving parts.

Resources
  • 5 stars: 27 (93%)
  • 4 stars: 1 (3%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 1 (3%)
D
Dave C. (Montreal, CA)
Did the Job well

Easy hook up with tester light. Get a couple of the fuse kits. Makes things easier as well

Hi Dave, thanks for leaving a review!

C
C.

Wrong part. Your company has the correct harness but it is not sold separately.

B
Brendan C. (Calgary, CA)
almost a necessity

I have experience with 4 examples of 3 different models of dash cam now (1 cheapo amazon unit, 1 VIOFO A129 and 2 A119 V3s) and this is borderline a necessity to get the most out of your camera, especially if you rather not lose any ports in your vehicle. Having the parking mode available is extremely helpful, and the hardwire kit is simple enough to install if you have basic wiring skills, which are not difficult to learn. Especially for only 30 bucks more, it's good value for what you get, especially for the quality of VIOFO's cameras for the value, and the voltage cutoff is fairly easy to understand and adjust

C
Customer (Miami, US)
My Viofo

no to much hassle

C
Cclokko (Calgary, CA)
Great experience

Staff was really helpful.

P
Peter D. (Edmonton, CA)
Super fast response

So I determined a fault in the wiring harness to my Viofo dash cam. I called BMC. I had no proof of purchase, but they were able to look up my record of purchase & sent me a new one. I received it the NEXT DAY! My camera was up & running in about a day, top shelf customer service, Thank you!

R
Raymond B. (Surrey, CA)

VIOFO Mini USB HK3 3-Wire Hardwire Kit

J
Joey D. (Buffalo, US)
Works Perfectly

Made the job easy, especially with the videos and resources on the site.

E
Enrique L. (Houston, US)
This is the hardwire kit you're looking for.

I have the Viofo A119 v3 and I purchased this kit to hardwire my camera to my Suburban. You will need to get two add-a-fuse adapters to make this work but once you get everything, the install is pretty easy. Follow the directions or watch the videos and your won't have any problems but if you do, know that Blackboxmycar hey very knowledgeable people that can help hey you thru it. If you want to hardwire your Viofo dashcam, this is the hardwire kit you're looking for.

c
charles j. (Atlanta, US)
Hardwire kit

The correct item and super fast delivery. Thank You

B
Basil J. (Mississauga, CA)
Great service!

I sent in a request to help me figure out which hardwire kit to purchase and was provided concise and helpful information by the cx team to make sure I was getting the product I wanted and that it would be a smooth installation process. I received the product earlier than the estimated time - have not had a chance to install yet so can't comment about that yet but would definitely use BlackBox again in the future.

P
Philip J. (West Palm Beach, US)
If I can do it …

If I can install this kit then you can as well. I received a Viofo A129 Pro for Christmas and wanted to hardwire it to my 2021 Mazda CX-30. I bought this kit along with the fuse tap kit. The unfortunate thing about the CX-30, and the new Mazda3’s, is that all of the fuses inside the car stay energized. The only fuses that shut off with the ignition are in the fuse panel under the hood. I had to run extra wire through the firewall where the main wiring harness comes through. Kind of a pain, but doable, and not the fault of BBMC. Thanks Mazda! BBMC was great when I chatted with a tech online. And their YouTube videos were a lot of help with install and set up of my cam.

M
Max T. (Orlando, US)
3 wire ACC hardwire

Instructions were not complicated, made installation very easy. Doesn't use power socket so I can use to charge other things.

R
Ronald C. (Vancouver, CA)

VIOFO 3 Wire ACC Hardwire Kit

R
Robert V. (Vancouver, CA)
Viofo 3 hardwire kit

I purchased this product because plugging the camera to the cigarette lighter was draining my battery. Now that it’s hardwire to the fuse box, it’s not draining my battery. It’s super easy to instal.

Hi Robert, Thank you for leaving a review and thank you for shopping with us. If you have any future questions or concerns, please don't hesitate to reach out

I
Ian A. (Laurelton, US)
fast service

I had a faulty hardwire kit and ordered a new kit from blackboxmycar. I received the new kit in a few days, very quick service. I also called the blackboxmycar help line and they were more than helpful. I would highly recommend blackboxmycar for all your camera needs.

T
Tony C. (Delta, CA)
excellent product

product as described and no issues when it was installed. Blackboxmycar is a great place to purchase from!! Great and fast service.

Hi Tony, thankyou for your review and for shopping with us. We are glad we could meet your expectations! If you require any future assistance, please don't hesitate to reach out.

D
Daniel D.
VIOFO Dash cam

This VIOFO Is one of the best Dash Came ever I love it

Hi Daniel, glad you love the VIOFO! Thanks for leaving a review and for shopping with us! If you ...

A
Avelino R. (Langley, CA)
bargain

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.

G
Gerardo M. (Simi Valley, US)
Fast

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!

H
Heather (Dundas, CA)
Exactly as described

The customer service was incredibly helpful prior to my purchase. It arrived on-time, as advertised, with clear instructions for installation.

Hi Heather, thanks for leaving a review! If you have any other questions, our team is here to help.

S
Steven T. (Richmond, US)
Harness

Works great

S
SBecker (Elmhurst, US)
Worked out fine...

Took three tries to get correct fuse taps not viofo or black box fault. Be nice if they shipped with based on vehicle type.

Hi Stephen, glad it worked out for you. If you have any questions, please don't hesitate to reach...

m
matthew m. (Oakland, US)

I don’t install yet

Hi Matthew, thanks for leaving a review. Let us know if you have any questions during your instal...

m
matthew m. (Oakland, US)

I don’t install yet

Hi Matthew, thanks for leaving a review. Let us know if you have any questions during your instal...

M
Mark D. (Kingston, CA)
Viofo 3 Hardwire Kit

Installation seamless and easy. Made for cleaner setup. Highly recommended over using the provided cigarette lighter/USB.

Hi Mark, thanks for leaving a review!

V
Vinh M. (Port Coquitlam, CA)
Excellent service

Bought the hardwire kits and they have all that you need along with instructions online. Great service too in-person

Hi Vinh, thanks for shopping at BlackboxMyCar!

P
Pat M.
Viofo 3 wire Acc Hardwire kit for Street Guardian sg9663dcpro

I had my dash cam installed by your staff and they did a great job. I have been back twice for some tweaks to the system. I was treated wonderfully by all your staff in particular Jonathan. Any questions I had were answered which were quite a number. I was very impressed with the service and knowledge of your staff and enjoyed all my dealings with BlackBoxmyCar. I would definitely refer anyone to use BlackBoxmyCar for dashcams.

Hello Pat, thanks for taking the time to leave your review. We appreciate your feedback and we'll make sure to pass the kind words along to Jonathan!

R
Ray J.

if the 3-wire acc hardwire kit is used with A119v2, does this need to connect directly to the dashcam or can it connect into the gps mount?

BlackboxMyCar Canada

Hey there, the 3 wire hardwire kit is used for the A119 V3. This kit can connect either to the dash cam's power port directly or via the GPS mount.