VIOFO HK3 Hardwire Kit for A129 & A119 V3 - Enables Parking Mode

In this review of the VIOFO HK3 hardwire kit, the bottom line is straightforward: this is the go-to hardwire accessory for VIOFO A129 series and A119 V3 owners who want reliable parking mode and a clean wired installation. The kit is built to work specifically with the A129, A129 PLUS, A129 PRO and A119 V3 dash cameras and provides a 13.1ft (4m) cable so you can route power neatly. For anyone upgrading from older hardwire solutions, this review focuses on compatibility, installation needs and the real-world power behavior reported by users.

Key Features

• Compatible Models: Designed to enable parking mode on the VIOFO A129, A129 PLUS, A129 PRO and A119 V3, ensuring feature support when paired with current camera firmware.
• Dedicated Cable Length: The 13.1ft (4m) cable gives enough reach for tidy installations in most vehicles without needing extensions.
• Three-Wire Input: ACC (yellow), ground (black) and battery (red) wiring lets the kit manage switched ignition power and constant battery connection for parking mode.
• Low Voltage Protection: The kit includes circuitry to protect the car battery by cutting power before it is overly drained during parking recording.
• Single-Device Compatibility: This HK3 is the only hardwire option stated to be compatible with the listed A129 and A119 V3 models, avoiding mismatches from older kits.

Who It's For

This hardwire kit is best for owners of the VIOFO A129 series or A119 V3 who want a permanent installation and the convenience of automatic parking mode without relying on an external power bank. Installers who are comfortable with vehicle fuse tap wiring will appreciate the tidy look and the length of the cable.

It is not suitable for owners of other VIOFO models such as the A229 Duo, T130 or A119 Mini, and it requires the dash camera to be updated to the latest firmware to enable parking mode. Buyers who prefer a plug-and-play cigarette adapter or who cannot access the vehicle fuse box easily should look elsewhere.

Pros & Cons

Pros

• Enables parking mode on supported VIOFO cameras for unattended recording.
• 13.1ft (4m) cable provides flexibility for professional-looking installs across vehicle types.
• Includes low voltage protection to help prevent car battery drain during parking mode use.
• Marketed as the only compatible hardwire kit for these specific camera models, reducing risk of compatibility errors.

Cons

• Some users report intermittent power issues and occasional early failures, indicating variable reliability in the field.
• Installation requires fuse tap wiring and a firmware update on the camera, so it is not truly plug-and-play for all users.

Specifications

Applicable Models	A129, A129 PLUS, A129 PRO, A119 V3
Connector Port	Mini USB
Input Voltage	12-24V
Input Interface	ACC (yellow), Ground (black), Battery (red)
Length	13.1ft (4m)
Feature	Enables Parking Mode, Low Voltage Protection

Our Verdict

The VIOFO HK3 hardwire kit is a practical, value-focused choice for owners of the A129 family and A119 V3 who want integrated parking mode and a neat permanent installation. It delivers the necessary wiring, length and battery protection for most users, but buyers should be aware of reported variability in reliability and must perform a firmware update and fuse-tap install. For those comfortable with vehicle wiring, it is a cost-effective way to unlock parking recording.

Frequently Asked Questions

Will this kit work with A229 Duo or A119 Mini?
No. The HK3 does not support A229 Duo, T130 or A119 Mini models and is intended only for the listed A129 models and the A119 V3.

Do I need to update my dash cam firmware?
Yes. The camera must be updated to the latest firmware for parking mode to be enabled and for proper compatibility with this hardwire kit.

Does the kit protect my car battery?
It includes low voltage protection to help prevent battery drain, but correct installation and settings are still important to avoid excessive discharge.