Viofo HK4 Hardwire Parking Mode Power Cable USB Type C for A119 MINI A229 A329
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The Viofo HK4 is a 4-metre USB Type-C hardwire cable that powers a compatible Viofo dash cam from the vehicle fuse box and enables parking mode. It features ACC detection, supports 12–24V systems, and offers four selectable voltage cut-off options to protect the car battery. It is part of the Viofo accessory range, compatible with the A119 Mini, A229, A229 Duo, A329, T130 2CH, T130 3CH and WM1.
This listing is the HK4 cable on its own. If you need fuse taps as well, choose the HK4 hardwire cable with 8-piece fuse set. If your dash cam uses a different connector, the Viofo hardwire range also includes the HK3 hardwire cable, compatible with the A119 V3 and A129 series.
Key specifications
- Connector: USB Type-C
- Input: 12V to 24V
- Maximum output: 5V 2A
- Cable length: 4m (13.1ft)
- Battery protection: 4 selectable voltage cut-off options
- Parking mode: ACC detection with automatic switching
- Connection: fuse box (VCC, ACC, GND)
HK4 Series Hardwire Cable
Seamless Parking Mode Switching
- Supports 12–24V electrical systems
- 4 selectable voltage cut-off options to prevent battery drain
- ACC detection automatically switches parking mode on and off
- Provides a constant power supply to the dash cam
With ACC detection, the dash cam enters parking mode when the engine is switched off and resumes normal recording when the vehicle is started.
The hardwire cable connects to your vehicle's fuse box (VCC, ACC, GND), providing continuous power without the need for a cigarette lighter adaptor.
While parked, the cable keeps the dash cam running and automatically cuts power before the car battery is drained.
Battery Discharge Prevention
The HK4 supplies continuous power in parking mode until the car battery voltage drops to the configured threshold, at which point it cuts power to the dash cam.
Configurable Voltage Cut-off
Four voltage cut-off levels are available. When the vehicle battery drops to the selected threshold, the HK4 stops supplying power to the dash cam to prevent battery discharge.
12V / 24V Compatible
The HK4 connects to cars, trucks, SUVs, buses and larger vehicles, accepting input from any 12–24V electrical system.
Cable Connection
Compatible with Viofo dash cams that have a USB Type-C power input. Connect the HK4 to the GPS power port only.
Explore the full range in Viofo Hardwire Kits.
Specification
| Maximum output | 5V 2A |
|---|---|
| Input | 12V - 24V |
| Cable length | 4 metres / 13.1 feet |
More specs
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What's Included
- Viofo HK4 Hardwire Cable
Viofo
About the Viofo HK4
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
A119 Mini 2 and A229 series owners adding parking mode. Same USB-C kit, supplied without the separate fuse set if you already have taps.
Our tech experts advise
Check which fuse tap your car needs before fitting; mini, micro and low-profile blades are not interchangeable. 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: Which dash cams does the VIOFO HK4 work with?
A: The HK4 is a USB Type-C hardwire cable. The compatible VIOFO models listed for it are the A119 Mini, A229, A229 Duo, A329, T130 2CH, T130 3CH and WM1.
Q: Will the HK4 drain my car battery?
A: The HK4 has 4 voltage cut-off options. When the battery voltage drops to the threshold you select, it stops powering the dash cam to help prevent battery discharge.
Q: Does the HK4 work in 24V vehicles?
A: Yes. The HK4 accepts a 12V to 24V input, so it suits cars, SUVs, trucks and buses, and outputs up to 5V 2A to the dash cam.
