VIOFO HK3-C Acc Hardwire Kit User Manual

: June 2, 2024
: VIOFO

Table of Contents

HK3-C Hardwire Kit
Specifications
Features
Power cut-off settings
Installation steps
Customer Service
References
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HK3-C Acc Hardwire Kit
User Manual VIOFO HK3-C Acc Hardwire Kit HK3-C Hardwire Kit
( Compatible with: VIOFO A139 Dash Camera )
USER MANUAL
Copyright 2022 VIOFO Ltd. All Rights Reserved.

HK3-C Hardwire Kit

VIOFO HK3-C Acc Hardwire Kit fig 1

Battery ：Constant power fuse slot
ACC： Switched fuse slot
Ground： Ground point

Specifications

Total Cable Length: 4 Meters
Input Voltage: 12-24V
Output Connector: USB Type-C Plug, DC 5V2A
Input Interface: ACC (Yellow), Ground (Black), Battery (Red)
Battery Protection Options: 11.8V / 12V / 12.2V / 12.4V 23.6V / 24V / 24.4V / 24.8V
Working temperature: -30°C to 60°C (-22°F to 140°F)
Protection: Low Voltage Protection, Over Current / Surge
Protection, Reverse Polarity Protection

Features

The HK3-C Hardwire Kit provides permanent power to the dashcam for the parking recording function. The ACC detection function will switch the dash camera into parking mode automatically when the vehicle engine is shut off and will resume normal recording when the vehicle engine is turned back on. The Low Voltage Cut-off function will protect the car battery from excessive discharge.

| Accepts Voltage from 12 – 24V
---|---
| 4 Options For Voltage Cut-Off to Prevent Battery Drain
ACC| ACC Detection, Automatically Switches Parking Mode
| Constant Power Supply
| Compatible with: VIOFO A139 Dash Camera

Power cut-off settings

Please ensure that you have set the parking mode options in the camera settings before installation. The VIOFO HK3-C Hardwire kit will power the dash cam in parking mode until the voltage of your car battery drops to the configured value or the configured timer expires. (Please set the parking recording timer using the VIOFO APP.)
Note: Before starting the installation, e suggest that the Hardwire Kit should be installed by professionals.

Installation steps

Make sure the engine is off and accessory power is off before proceeding.

Locate your Fuse Box
Fuse boxes and fuse types vary not only between car models, but also on year and variant. Check the Car Manual to find the fuse box location and confirm the fuse type.
Identify which fuse is ACC & Batter2y
Battery Wire (RED)
To identify a fuse for the battery connection, turn the ignition switch to the lock position. Look for a fuse that is live (allows electricity to flow) even when the ignition switch is in the off position. You can identify the fuse by applying a fuse/circuit/voltage test device when the engine is off. Place the tip of the tester on the exposed metal part of the fuse.
ACC Wire (YELLOW)
To identify a fuse for the ACC connection, turn the ignition switch to the ACC (Accessory) position. Look for a fuse that is live when the ignition switch is in the ACC position but off when the ignition switch is in the off position.
Locate a Ground point
To identify a suitable ground point, use circuit tester in continuity mode. Locate a screw with direct connection to the vehicle body and check for a good continuity reading between the screw and the vehicle body, this should be < 0.1 ohm.
Connect an Add-A-Fuse kit to the hardwire kit
Use an Add-A-Fuse kit sold separatelyfor a clean installation. Once the fuse slot and type of fuse required for the hardwire kit is determined, a suitable add-A-Fuse kit can be crimped to the hardwire kit ACC and BATT connections. The crimp can be made successfully using either a standard crimp tool, or using standard needle nose pliers.
Note: Fuse boxes and fuse types vary not only between car models, but also on year and variant. Check the Car Manual to find the fuse box location and confirm the fuse type.
Connect the fuses
Yellow (ACC) accessory power supply — Connect to a fuse that turns on / off with the engine. Red (Battery) constant power supply — Connect to a fuse that is always powered, the connection must be made after passing through the fuse. Black (Ground) connection — Place the spade connector under the head of a ground point screw or bolt ensuring a clean electrical contact and tighten the screw to secure.
Test the Dash Cam
After connecting the power and ground wire connections (Red, Yellow and Black), plug the hardwire kit into the camera, then start the vehicle to check that it works. Also check the camera parking mode settings in the Viofo app.
Note: We recommend you test that the hardwire kit and camera function correctly, before fully securing the cables neatly behind the vehicle trim, because it is easier to troubleshoot if the wires are easily accessible.