Camera stops when engine is off

The yellow ACC wire senses ignition status to switch between driving and parking mode. If the mode doesn’t change, ensure the ACC wire is connected to an ignition-triggered circuit and parking mode is enabled on the menu.

Camera stops unexpectedly during parking mode

This usually occurs if the battery reaches low-voltage cutoff or the parking timer ends.

Camera keeps recording after turning off the engine

Confirm the ACC wire is correctly connected to an accessory circuit (not constant power).

How to install the dash cam hardwire kit?

Connect the red wire to a constant power source using a fuse tap. Connect the yellow wire to a circuit that only has power when the ignition is on (ACC). Securely ground the black wire to an unpainted metal point.

Does hardwire cable have low voltage protection function?

Yes, the hardwire kit features built-in low-voltage protection. It automatically cuts power to the dash cam when your vehicle's battery drops to 11.8V (for 12V systems) or 24.8V (for 24V systems), preventing battery drain.

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VIOFO HK4 Hardwire Cable USB-C for A229/A329/WM1/T130/A119 Mini 2

VIOFO HK4 Hardwire Cable USB-C for A229/A329/WM1/T130/A119 Mini 2

Product ID: 431837156

Details

Brand
VIOFO
Colour
Black
Connectivity technology
USB
Field of view
140 Degrees
Included components
Cigarette Kit
Model name
HK4

⚡Low voltage battery protection

🔋24h continuous power

🔌12/24V universal compatibility

Description

🔒 Power your peace of mind with VIOFO HK4 — always on, always watching.

SMART LOW VOLTAGE CUT OFF - Safeguard your car battery by setting custom voltage thresholds to prevent unwanted discharge.
PLUG PLAY USB C CONNECTIVITY - Modern USB-C interface ensures fast, reliable power delivery and easy installation.
UNINTERRUPTED 24 7 SURVEILLANCE - Keep your vehicle protected day and night with continuous power supply, even when the engine is off.
UNIVERSAL VEHICLE COMPATIBILITY - Works flawlessly with any 12V or 24V vehicle — from compact cars to heavy-duty trucks.
SEAMLESS PARKING MODE ACTIVATION - Automatically switches to parking mode when your engine is off, so you never miss a moment.

The VIOFO HK4 Hardwire Cable USB-C is a professional-grade power solution designed for select VIOFO dash cams, enabling 24-hour parking surveillance with smart low voltage protection. Compatible with 12V and 24V vehicles, it automatically switches your dash cam into parking mode when the engine is off, ensuring continuous recording without draining your battery. Its 13.1ft cable length and USB-C connectivity make installation straightforward, while its advanced features guarantee reliable, uninterrupted monitoring.

Specifications

ASIN	B09MRVP2PX
Are Batteries Included?	No
Auto Part Orientation	Drivers Side
Auto Part Position	Rear
Best Sellers Rank	3,568 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 55 in Car On-Dash Mounted Cameras
Box Contents	Hardwire Kit, Cigarette Lighter
Brand	VIOFO
Brand Name	VIOFO
Colour	Black
Compatible Devices	Vehicle, dash cam (VIOFO A329/A229Plus/A229Pro/A119Mini 2/A139Pro/WM1/T130)
Compatible with Vehicle Type	Car
Connectivity Technology	USB
Connectivity technology	USB
Country of Origin	China
Customer Reviews	4.4 out of 5 stars 1,211 Reviews
Field of View	140 Degrees
Frame Rate	30 FPS
Item Dimensions D x W x H	7D x 14W x 11H centimetres
Item Highlight	USB-C hardwire cable, low voltage protection for parking mode, fuses sold separately
Item Weight	0.15 Kilograms
Manufacturer	VIOFO
Manufacturer Part Number	HK4
Model Name	HK4
Model Number	HK4
Model name	HK4
Mounting Type	Dashboard Mount
Number of Items	1
Other Special Features of the Product	Night Vision, Parking Monitor
Product Warranty	1 Year
Real Angle of View	140 Degrees
Screen Size	2.7 Inches
Special feature	Night Vision, Parking Monitor
Unit Count	1.0 count
Vehicle service type	Car
Video Capture Resolution	1080p
Video capture resolution	1080p

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