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 Acc Hardwire Kit, USB-C Hard Wire Kit for T130/A139Pro/WM1/A229Duo&A229PLUS&A229PRO,/A119MINI2 Dash Cam, Low Voltage Protection for Parking Mode

VIOFO HK4 Acc Hardwire Kit, USB-C Hard Wire Kit for T130/A139Pro/WM1/A229Duo&A229PLUS&A229PRO,/A119MINI2 Dash Cam, Low Voltage Protection for Parking Mode

Product ID: 459538051

Details

Brand
VIOFO
Colour
Black
Connectivity Technology
USB
Field Of View
140 Degrees
Included Components
Cable
Model Name
Type-C HK4 Kit

⏰24/7 parking surveillance mode

⚡Adjustable low voltage protection

🔋12/24V universal power compatibility

Description

🔌 Power your peace of mind—drive protected, park worry-free!

PLUG PLAY USB C HARDWIRE - Direct connection with a 13.1ft cable ensures clean installation and reliable power delivery.
AUTO PARKING MODE ACTIVATION - Engine off? Your dash cam instantly switches to parking mode for hassle-free security.
SMART LOW VOLTAGE PROTECTION - Protect your vehicle battery with customizable cut-off settings to avoid unexpected drains.
UNIVERSAL 12 24 V COMPATIBILITY - Works flawlessly with cars, trucks, buses, and SUVs—power your dash cam anywhere.
SEAMLESS 24 7 PARKING SURVEILLANCE - Never miss a moment—continuous power keeps your dash cam recording even when your engine is off.

The VIOFO HK4 ACC Hardwire Kit is a USB-C powered solution designed for select VIOFO dash cams, enabling continuous 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 seamless security without draining your battery. With a 13.1ft cable and easy installation, it’s the ultimate upgrade for professional-grade vehicle monitoring.

Specifications

ASIN	B09MRVP2PX
Are Batteries Included?	No
Auto Part Orientation	Drivers Side
Auto Part Position	Rear
Best Sellers Rank	#220,935 in Electronics ( See Top 100 in Electronics ) #596 in Car On-Dash Video
Box Contents	Cable
Brand Name	VIOFO
Colour	Black
Compatible Devices	Camera
Compatible with Vehicle Type	Bus, Car, Truck
Connectivity Technology	USB
Customer Reviews	4.5 4.5 out of 5 stars (1,205)
Field Of View	140 Degrees
Frame Rate	30 FPS
Importer Contact Information	VIOFO.IN MO:8160446485
Item Dimensions D x W x H	7D x 14W x 11H Centimeters
Item Type Name	Hardwire Kit Cable
Item Weight Unit of Measure	0.15 Kilograms
Manufacturer	VIOFO, VIOFO LTD., CHINA
Manufacturer Contact Information	VIOFO LTD., CHINA
Manufacturer Part Number	HK4
Model Name	Type-C HK4 Hardwire Kit
Model Number	HK4
Mounting Type	Dashboard Mount
Number of Items	1
Other Special Features of the Product	Parking Monitor
Packer Contact Information	VIOFO.IN
Real Angle of View	140 Degrees
Screen Size Unit of Measure	2.7 Inches
Unit Count	1 Count
Video Capture Resolution	1080p

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