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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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

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
Model Name
HK4
Vehicle Service Type
Bus Car Truck
Connectivity Technology
USB
Special Feature
Parking
Included Components
Cable

⏰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	#374,386 in Electronics ( See Top 100 in Electronics ) #491 in Car On-Dash Video
Box Contents	Cable
Brand	VIOFO
Brand Name	VIOFO
Colour	Black
Compatible Devices	Camera
Compatible with Vehicle Type	Bus, Car, Truck
Connectivity Technology	USB
Customer Reviews	4.5 out of 5 stars 1,175 Reviews
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	HK4
Model Number	HK4
Mounting Type	Dashboard Mount
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
Special Feature	Parking Monitor
Unit Count	1 Count
Vehicle Service Type	Bus, Car, Truck
Video Capture Resolution	1080p

Reviews

S**A

Great Product. Worth Buying

Great product.

9.06.2024

A**R

Super Teil unkompliziert

Super teil

20.05.2026

ن**ز

انصح فية

اشتريتة ووصلت الداش كام عن طريق الفيوز حتى والسيارة واقفة يصور

15.09.2024

J**H

Build quality

Exactly as mentioned, good quality, I personally recommened this

22.09.2025

B**R

Get some knowledge to get confidence before you start.

I found this to be very easy once I had followed the U-tube guidance to give confidence. Picked a nice sunny day and laid everything out. All went very well. Used a connector from Powerful (a U-tube site specialising in Landrover add ons). Would recommend watching a video first to help.

28.06.2026

S**!

Onmisbare hardwire kabel.

Maakt goede aansluiting om ook in parkeerstand de Viofo zijn werk te laten doen.

4.10.2025

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