--- product_id: 389018170 title: "VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode (Fuse Tap Not Included)" brand: "viofo" price: "€ 37.75" currency: EUR in_stock: true reviews_count: 13 category: "Viofo" url: https://www.desertcart.de/products/389018170-viofo-hk4-acc-hardwire-cable-usb-c-hard-wire-cable store_origin: DE region: Germany --- # Low Voltage Protection USB-C Direct Power 12/24V Vehicle Compatibility VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode (Fuse Tap Not Included) **Brand:** viofo **Price:** € 37.75 **Availability:** ✅ In Stock ## Summary > 🔌 Power Up Your Dash Cam Like a Pro — Stay Connected, Stay Protected! ## Quick Answers - **What is this?** VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode (Fuse Tap Not Included) by viofo - **How much does it cost?** € 37.75 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/389018170-viofo-hk4-acc-hardwire-cable-usb-c-hard-wire-cable) ## Best For - viofo enthusiasts ## Why This Product - Trusted viofo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Low Voltage Cut-Off:** Protect your car battery with 4 adjustable voltage thresholds to avoid unwanted drain. - • **Auto Parking Mode Activation:** Dash cam switches automatically between driving and parking modes with ACC detection—effortless security. - • **Universal 12/24V Compatibility:** Works flawlessly with cars, trucks, SUVs, and big rigs—one cable to power them all. - • **Clean, Professional Installation:** USB-C hardwire cable with 13.1ft length for a sleek, clutter-free setup that frees your cigarette lighter port. - • **Seamless 24/7 Parking Surveillance:** Keep your dash cam recording even when your engine is off—never miss a moment in parking mode. ## Overview The VIOFO HK4 ACC Hardwire Cable is a USB-C power solution designed for select VIOFO dash cams, enabling continuous 24/7 recording with smart low voltage protection and automatic parking mode activation. Compatible with 12V and 24V vehicles, it offers a clean, professional installation that bypasses the cigarette lighter port, ensuring your dash cam stays powered without draining your car battery. ## Description Product description 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 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 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). 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. 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. 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. Review: Works Great, No Problems, Good Customizability - My previous hard wire kit for my Viofo A119 Mini v2 fried my car's battery, but this did not. That alone should make this a 5 star! My favorite thing about it is that I can choose how low I want the voltage to go before it will shut off power (keeping my battery safe). This is something that a lot of other kits didn't have, and it is especially good over here in the Midwest where you want as much voltage in your battery as possible during very cold days. The length was perfect for my car and I've had no problems with anything else. It did cost a bit more than others, but the voltage protection switching option alone makes it worth it. Overall, a great hardwire kit. Review: This is a review for the HK4 ACC Hardwire Kit used with the A229 Duo - If you are planning to use the Parking Mode feature on your VioFo Dashcam, look no further for you have come to the right place. The packaging was pretty basic but the wiring insulation quality seems to be heat, cold, water and oil resistant enough to stand the extremes of most environmental experiences of a consumer's car. The kit comes with an integrated car battery voltage drop circuit with a four position switch that allows you to pre-set the battery voltage you want your dashcam to power off at. Bear this in mind as you choose a location for this switch. There was (more than) enough slack to find a suitable location for my switch (behind the glove box with double-sided tape). There is single wire between USB-C plug (at the dashcam) and the voltage dropout selector module. On the opposite side of the module has a small torroid (most likely) and three wires (Battery, Accessory and Common) for Switched, Constant power to the dashcam which enables parking mode to work on the dashcam. These wires are all the same length and the length of these wires was long enough to route to the fuse box of my Volvo XC60. The common wire has a pre-soldered spade connector that is very convenient for a quick installation but the red and yellow wires (battery and accessory) actually have crimped barrel connectors that you must interconnect with aftermarket fuse taps for your particular fuse size. This means that BEFORE YOU START YOUR INSTALLATION YOU MUST determine which two fuse locations you want to use, make sure you purchase (or order) the correct fuse tap size(s) and once said fuse taps arrive, check them to ensure they are the correct in orientation so you can install them safely without pinching them or bending them too far so as to damage the fuse tap wires. Remember also that you need to be able to actually close the fuse box cover after installing these fuse taps - they are pretty tall for their size, especially depending on the size of your fuse and there are probably six different sizes our there so do your research prior to starting the installation. This product was actually really easy to install, especially given the price. This is an excellent value for what is included and the unbelievable features the camera will have as a result. I highly recommend checking out parking mode if you own a compatible VioFo dashcam. One other thought: I installed the VioFo in my wife's car and I bought a FitcamX for my car - both have parking modes so I will be installing the fitcamX in my car today. I purchased the FitcamX hardwire kit and it was twice as expensive as the VioFo HK4 but the OEM actually pre-sized and pre-wired the Fuse Taps and pre-soldered the battery and ACC wires with in-line glass fuses BUT they don't have the voltage selector switch that you find on the cheaper VioFo. Once I get the FitcamX up and running, I will leave a review for that product on their page. ## Features - 【Fuse Tap Not Included】Note: The installation of the harewire cable requires the connection of the circuit fuse taps. If you need the HK4 with 8pcs full set circuit fuse taps, please check the ASIN B0CHDXPGP1. If you need to buy circuit fuse taps separately, please check the ASIN B08SJZJCV5. - 【24 Hours Parking Surveillance】When the engine is off, HK4 hardwire cable provides continuous power to the camera, any collisions, event will be recorded. - 【Low Voltage Protection】HK4 hardwire lets you set a voltage cut-off value with 4 options, when the voltage of vehicle’s battery drops to the cut-off value, it will stop powering your dashcam, thus protecting your battery from discharge. - 【Automatically Switch Parking Mode】With ACC detection, the dash cam will switch to parking mode automatically if the vehicle engine is off. The dash cam will switch into normal recording when the vehicle engine is on. - 【12 / 24V Compatible】HK4 ACC Hardwire cable connects the camera directly to the car, truck, bus, SUVs, or big rig for continuous power, accepts voltage from any type of vehicles runs on 12 – 24V. - 【Installation】The hardwire cable length is 13.1ft (4m). The red battery cable should be connected to constant power. The ACC yellow cable should be connected to ignition. The Ground cable should be connected to vehicle body. NOTE: You need to prepare 2pcs fuse tap to work with the hardwire cable. - 【Product Compatible】HK4 hardwire cable is for VIOFO A329/A229Plus/A229Pro/A119Mini 2/A139Pro/WM1/T130 dash cam, ISN'T compatible with other series of our dash camera. - VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09MRVP2PX | | Are Batteries Included | No | | Auto Part Orientation | Drivers Side | | Auto Part Position | Rear | | Best Sellers Rank | #1,035 in Electronics ( See Top 100 in Electronics ) #9 in Car On-Dash Mounted Cameras | | Brand | VIOFO | | Built-In Media | Cigarette Lighter, Hardwire Kit | | Color | HK4 Hardwire Cable | | Compatible Devices | Camera | | Compatible with Vehicle Type | Car | | Connectivity Technology | USB | | Customer Reviews | 4.5 out of 5 stars 1,182 Reviews | | Field Of View | 140 Degrees | | Frame Rate | 30 FPS | | Item Dimensions D x W x H | 2.76"D x 5.51"W x 4.33"H | | Item Weight | 0.15 Kilograms | | Manufacturer | VIOFO | | Mfr Part Number | HK4 | | Model Name | HK4 | | Model Number | HK4 | | Mounting Type | Dashboard Mount | | Other Special Features of the Product | Night Vision, Parking Monitor | | 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 | ## Product Details - **Brand:** VIOFO - **Color:** HK4 Hardwire Cable - **Connectivity Technology:** USB - **Field Of View:** 140 Degrees - **Included Components:** Cigarette Lighter, Hardwire Kit - **Model Name:** HK4 - **Mounting Type:** Dashboard Mount - **Special Feature:** Night Vision, Parking Monitor - **Vehicle Service Type:** Car - **Video Capture Resolution:** 1080p ## Images ![VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode (Fuse Tap Not Included) - Image 1](https://m.media-amazon.com/images/I/61QKDjxPzML.jpg) ![VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode (Fuse Tap Not Included) - Image 2](https://m.media-amazon.com/images/I/71vfWNEVGUL.jpg) ![VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode (Fuse Tap Not Included) - Image 3](https://m.media-amazon.com/images/I/71S7iwsLm6L.jpg) ![VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode (Fuse Tap Not Included) - Image 4](https://m.media-amazon.com/images/I/81jIl63dfoL.jpg) ![VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode (Fuse Tap Not Included) - Image 5](https://m.media-amazon.com/images/I/61z2yF1h7CL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Camera stops when engine is off** A: 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. **Q: Camera stops unexpectedly during parking mode** A: This usually occurs if the battery reaches low-voltage cutoff or the parking timer ends. **Q: Camera keeps recording after turning off the engine** A: Confirm the ACC wire is correctly connected to an accessory circuit (not constant power). **Q: How to install the dash cam hardwire kit?** A: 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. **Q: Does hardwire cable have low voltage protection function?** A: 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works Great, No Problems, Good Customizability *by C***S on May 28, 2025* My previous hard wire kit for my Viofo A119 Mini v2 fried my car's battery, but this did not. That alone should make this a 5 star! My favorite thing about it is that I can choose how low I want the voltage to go before it will shut off power (keeping my battery safe). This is something that a lot of other kits didn't have, and it is especially good over here in the Midwest where you want as much voltage in your battery as possible during very cold days. The length was perfect for my car and I've had no problems with anything else. It did cost a bit more than others, but the voltage protection switching option alone makes it worth it. Overall, a great hardwire kit. ### ⭐⭐⭐⭐⭐ This is a review for the HK4 ACC Hardwire Kit used with the A229 Duo *by L***7 on January 21, 2023* If you are planning to use the Parking Mode feature on your VioFo Dashcam, look no further for you have come to the right place. The packaging was pretty basic but the wiring insulation quality seems to be heat, cold, water and oil resistant enough to stand the extremes of most environmental experiences of a consumer's car. The kit comes with an integrated car battery voltage drop circuit with a four position switch that allows you to pre-set the battery voltage you want your dashcam to power off at. Bear this in mind as you choose a location for this switch. There was (more than) enough slack to find a suitable location for my switch (behind the glove box with double-sided tape). There is single wire between USB-C plug (at the dashcam) and the voltage dropout selector module. On the opposite side of the module has a small torroid (most likely) and three wires (Battery, Accessory and Common) for Switched, Constant power to the dashcam which enables parking mode to work on the dashcam. These wires are all the same length and the length of these wires was long enough to route to the fuse box of my Volvo XC60. The common wire has a pre-soldered spade connector that is very convenient for a quick installation but the red and yellow wires (battery and accessory) actually have crimped barrel connectors that you must interconnect with aftermarket fuse taps for your particular fuse size. This means that BEFORE YOU START YOUR INSTALLATION YOU MUST determine which two fuse locations you want to use, make sure you purchase (or order) the correct fuse tap size(s) and once said fuse taps arrive, check them to ensure they are the correct in orientation so you can install them safely without pinching them or bending them too far so as to damage the fuse tap wires. Remember also that you need to be able to actually close the fuse box cover after installing these fuse taps - they are pretty tall for their size, especially depending on the size of your fuse and there are probably six different sizes our there so do your research prior to starting the installation. This product was actually really easy to install, especially given the price. This is an excellent value for what is included and the unbelievable features the camera will have as a result. I highly recommend checking out parking mode if you own a compatible VioFo dashcam. One other thought: I installed the VioFo in my wife's car and I bought a FitcamX for my car - both have parking modes so I will be installing the fitcamX in my car today. I purchased the FitcamX hardwire kit and it was twice as expensive as the VioFo HK4 but the OEM actually pre-sized and pre-wired the Fuse Taps and pre-soldered the battery and ACC wires with in-line glass fuses BUT they don't have the voltage selector switch that you find on the cheaper VioFo. Once I get the FitcamX up and running, I will leave a review for that product on their page. ### ⭐⭐⭐⭐⭐ Works well. *by T***O on February 13, 2026* Easy installation. ## Frequently Bought Together - VIOFO HK4 Acc Hardwire Kit, USB-C Hard Wire Kit for A329/A229Plus/A229Pro/A119Mini2/A139Pro/WM1/T130 Dash Cam, Low Voltage Protection for Parking Mode - VIOFO A229 Plus Dash Cam Front and Rear, Dual STARVIS 2 Sensors, 2 Channel HDR, 1440P+1440P Voice Control Car Dash Camera, 5GHz Wi-Fi, Support 512GB Max, Voice Control, Ultra-Precise GPS - VIOFO 256GB Industrial Grade microSD Card, U3 A2 V30 High Speed Memory Card with Adapter, Support Ultra HD 4K Video Recording --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.de/products/389018170-viofo-hk4-acc-hardwire-cable-usb-c-hard-wire-cable](https://www.desertcart.de/products/389018170-viofo-hk4-acc-hardwire-cable-usb-c-hard-wire-cable) --- *Product available on Desertcart Germany* *Store origin: DE* *Last updated: 2026-05-19*