Viofo HK3 Hardwire Power Cable Mini-USB with 8pcs Fuse Set A119 Series Dash Cam
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The Viofo HK3 Hardwire Power Cable with 8-piece fuse set connects Mini-USB A119 series dash cams directly to the vehicle fuse box, providing continuous power with automatic parking mode switching and low voltage cut-off. It is part of Viofo's HK hardwire cable range.
This listing is the HK3 with 8pcs fuse set. The HK3 hardwire cable is also available without the fuse set. If your dash cam uses USB-C, see the Viofo HK4 instead.
Key specifications
- Connector: Mini-USB
- Input: 12–24V
- Maximum output: 5V 2A
- Wiring: VCC, ACC, GND
- Low voltage cut-off: 4 options
- Includes: HK3 hardwire cable and 8pcs fuse set
- Compatible with: A119 V3 and A129 series
HK3 series hardwire cable and 8pcs fuse set
Parking mode switching
- Supports 12–24V electrical systems
- 4 voltage cut-off options to prevent battery drain
- ACC detection automatically switches parking mode
- Constant power supply
With ACC detection, the dash cam enters parking mode when the engine is switched off and resumes normal recording once the vehicle is started. The hardwire kit powers the dash cam via the fuse box (VCC, ACC, GND), replacing the cigarette lighter adapter and providing coverage from the moment you drive away.
When parked, the kit keeps the dash cam running by tapping into the vehicle's fuse box, capturing incidents and powering down automatically before the car battery is drained. Connect to the GPS power port only.
Battery discharge prevention
The HK3 supplies continuous power to the dash cam in parking mode until the car battery voltage drops to the configured threshold, at which point it cuts power to protect the battery.
Configurable voltage cut-off
Four voltage cut-off thresholds are available. When the battery drops to the selected level, the HK3 stops supplying power to the dash cam, preventing discharge.
12V / 24V compatible
The HK3 accepts input from any vehicle running on 12–24V, including cars, trucks, buses, SUVs, and large goods vehicles.
Cable connection
Compatible with Viofo dash cams featuring a Mini-USB power input. Connect the HK3 to the GPS power port only.
Explore the full range in Viofo Hardwire Kits.
Specification
| Maximum output | 5V 2A |
|---|---|
| Input | 12v- 24v |
More specs
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What's Included
- Viofo HK3 Hardwire Cable
- 8PCS Full Set Fuse
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About the Viofo HK3-8PCS
From our tech experts at CEN
A hardwire kit is what turns a dash cam into a parking camera. It draws a permanent feed from the fuse box, keeps the 12V socket free, and includes a voltage cutoff that shuts the camera down before your battery is affected.
Who it suits
Owners of the A119 V3 and A129 series who want parking mode on an older VIOFO camera.
Our tech experts advise
If you are replacing an older camera as well, check whether your new model takes the HK4 or HK6 instead, as connectors changed across generations. Browse all hardwire kits. If you would rather not take the trim off and probe the fuse box yourself, we fit hardwire kits at our Beeston workshop alongside a camera install. See dash cam installation.
Explore the full Viofo range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Viofo
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Frequently Asked Questions
Q: Is this accessory compatible with my dash cam?
A: Dash cam accessories are generally model-specific. The compatible camera models are listed in the product description, and you can contact CEN to confirm compatibility before ordering.
Q: What does a hardwire kit do?
A: A hardwire kit powers your dash cam directly from the vehicle's fusebox, hiding the cable and enabling parking mode. Kits include battery protection so your car battery is never drained below a safe level.
Q: Why would I add a dash cam battery pack?
A: A battery pack powers parking mode for longer periods without drawing on your car battery at all. It charges while you drive and is the recommended option for extended parking protection.
Q: Can CEN fit this accessory?
A: Yes. CEN offers professional dash cam and accessory installation from our Nottingham premises. Contact us to book.
Q: What is included with this HK3 kit?
A: You get the VIOFO HK3 hardwire cable and an 8-piece fuse set.
Q: Which dash cams does the HK3 fit?
A: It fits VIOFO dash cams with a Mini-USB power input, including the A119 V3 and the A129, A129 Plus, A129 Pro, A129 Duo, A129 Duo IR, A129 Pro Duo, A129 Plus Duo and A129 Plus Duo IR.
Q: Will the HK3 drain my car battery?
A: It has 4 voltage cut-off options. When the battery voltage drops to the selected threshold, the HK3 stops supplying power to the dash cam.
