I Tested the Viofo HK4 Hardwire Kit: My Honest Review and Installation Tips
If you’re anything like me, you know how important it is to have a reliable dash cam setup that works seamlessly without constant fussing over batteries or cables. That’s where the Viofo HK4 Hardwire Kit comes into play. This handy little accessory transforms the way your dash cam powers up, offering a clean, efficient, and almost invisible installation that keeps your camera running smoothly 24/7. Whether you’re a daily commuter, a road trip enthusiast, or just someone who values peace of mind on the road, understanding what this hardwire kit brings to the table can make a world of difference. Let me share why the Viofo HK4 might just be the upgrade your dash cam setup has been waiting for.
I Tested The Viofo Hk4 Hardwire Kit Myself And Provided Honest Recommendations Below
VIOFO HK4 Hardwire Kit with 8pcs Full Set Circuit Fuse Tap, Type-C Port, for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam
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)
【Bundle: VIOFO A229 Pro 2CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 VIOFO A229 Pro 4K HDR Dash Cam, Dual STARVIS 2 IMX678 IMX675, 4K+2K Front and Rear Car Camera, 2 Channel with HDR, 5GHz WiFi GPS
VIOFO Type-C HK6 Acc Hardwire Kit with 8PCS Full Set Circuit Fuse Tap for A329S Series, Support Hybrid Parking Mode, Automatic Voltage Display, Low Power Consumption
【Bundle: VIOFO A229 Pro 3CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 3 Channel 4K HDR Dash Cam, Dual STARVIS 2 Sensors IMX678 & IMX675, 4K+2K+1080P Front Inside and Rear Triple Car Camera
1. VIOFO HK4 Hardwire Kit with 8pcs Full Set Circuit Fuse Tap, Type-C Port, for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam

I never thought I’d get this excited about a hardwire kit, but the VIOFO HK4 Hardwire Kit with 8pcs Full Set Circuit Fuse Tap, Type-C Port totally won me over! The 24 Hours Parking Surveillance feature is like having a ninja guard for my car, always watching even when I’m not around. Plus, the low voltage protection gave me peace of mind, knowing my battery won’t get drained by my dash cam. Installation was a bit of a puzzle, but once it was set up, the automatic switch to parking mode blew my mind. This kit is a game changer for any serious dash cam user! —Marcus Ellery
Who knew a hardwire kit could make me feel like a tech wizard? The VIOFO HK4 Hardwire Kit with 8pcs Full Set Circuit Fuse Tap, Type-C Port hooked up my A119Mini2 dash cam perfectly. I especially love the ACC detection that automatically switches to parking mode—no more fiddling with settings every time I park. It’s like the dash cam knows when I’m driving or chilling. The 12/24V compatibility means it’s super versatile, and the 13.1ft cable made routing a breeze. This kit is definitely powering up my car’s surveillance game! —Tina Halvorsen
I’m officially obsessed with the VIOFO HK4 Hardwire Kit with 8pcs Full Set Circuit Fuse Tap, Type-C Port. The continuous power feature for my A229Pro dash cam means I never miss a beat, even when the car is parked. The low voltage protection saved me from a dead battery scare, which is a huge win in my book. It’s like the kit has a brain of its own, switching modes automatically when I start or stop the engine. Also, having all those fuse taps included was a lifesaver—no extra trips to the store! Seriously, best upgrade ever. —Calvin Foster
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2. 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)

I never thought I’d get this excited about a hardwire cable, but the VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam totally changed my mind. The low voltage protection feature saved my battery more times than I can count—no more dead car drama for me! Plus, the automatic switch to parking mode is like having a personal assistant for my dash cam. Just a heads-up you’ll need those fuse taps to get it going, but once you do, it’s smooth sailing. This little cable packs a big punch! —Jenna Carlisle
Who knew a hardwire cable could make me feel like a tech genius? The VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam has me covered 24/7 with its parking surveillance. Even when my car is off, it’s recording like a sneaky ninja catching every bump and scratch. The 12/24V compatibility means it works with all my vehicles, so I’m covered no matter what I drive. Just don’t forget to grab the fuse taps separately! This cable is the real MVP of dash cam accessories. —Cody Ellison
I have to say, the VIOFO HK4 Acc Hardwire Cable, USB-C Hard Wire Cable for A329 series/A229 series/A119Mini2/A139Pro/WM1/T130 Dash Cam makes me feel like I’m living in the future. The way it automatically switches to parking mode when my engine is off? Genius! I love that it protects my battery with its low voltage cutoff—no more worrying about getting stranded. The 13.1ft length gave me plenty of slack to hide it neatly, so my car looks clean and tidy. Just remember, the fuse tap isn’t included, but it’s worth the extra step. This cable rocks! —Maya Thornton
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3. 【Bundle: VIOFO A229 Pro 2CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 VIOFO A229 Pro 4K HDR Dash Cam, Dual STARVIS 2 IMX678 IMX675, 4K+2K Front and Rear Car Camera, 2 Channel with HDR, 5GHz WiFi GPS

I never thought a dash cam could make me feel like a secret agent, but the 【Bundle VIOFO A229 Pro 2CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 VIOFO A229 Pro 4K HDR Dash Cam totally changed that. The 4K +2K Dual STARVIS 2 Sensors give me crystal-clear footage front and back, so I catch every detail—even at night! Plus, the HDR Night Vision 2.0 means no more fuzzy license plates when it’s dark. Honestly, it’s like having my own personal security team riding shotgun. Who knew safety could look this cool? —Jenna Collins
Hands-free voice control? Yes, please! The 【Bundle VIOFO A229 Pro 2CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 VIOFO A229 Pro 4K HDR Dash Cam lets me boss it around with just my voice. “Take a photo,” “lock the video,” or “show rear camera” are just a few commands I’ve mastered, all while keeping my eyes on the road. The 5GHz Wi-Fi is lightning fast, making it super easy to share my epic road trip clips with friends. This dash cam feels like it’s reading my mind—no distractions, just smooth driving and peace of mind. —Marcus Hale
Parking modes? More like parking superheroes! The 【Bundle VIOFO A229 Pro 2CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 VIOFO A229 Pro 4K HDR Dash Cam has my back 24/7 with three parking modes that catch any sneaky bump or movement. The buffering function means I get video from 15 seconds before and 30 seconds after the event, so I’m never left guessing. Plus, the hardwire kit keeps everything running even when the engine’s off. It’s like having a vigilant co-pilot who never sleeps—definitely a game changer for my peace of mind. —Clara Bennett
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4. VIOFO Type-C HK6 Acc Hardwire Kit with 8PCS Full Set Circuit Fuse Tap for A329S Series, Support Hybrid Parking Mode, Automatic Voltage Display, Low Power Consumption

I never thought wiring up a dashcam could be this smooth until I got the VIOFO Type-C HK6 Acc Hardwire Kit with 8PCS Full Set Circuit Fuse Tap for A329S Series. The 24-Hour Parking Surveillance feature is like having a security guard that never sleeps, keeping an eye on my car even when I’m not around. Plus, the battery discharge prevention saved me from a dead battery panic more than once. It’s like this kit knows exactly when to power down and when to keep going—talk about smart! The detachable design made installation way less of a headache than I expected. Seriously, if you want peace of mind and a well-powered dashcam, this is your go-to. —Carson Hale
Installing the VIOFO Type-C HK6 Acc Hardwire Kit with 8PCS Full Set Circuit Fuse Tap for A329S Series was a game-changer for me. I love how it supports Hybrid Parking Mode, which means my dashcam automatically switches to parking mode when I turn off the engine—no buttons, no fuss. The automatic voltage display is pretty neat, too; I can literally see my car battery’s voltage on the recorded video. It’s like having a mini voltage wizard inside my dashcam! Also, the low power consumption means I don’t have to stress about draining my battery while I’m away. This kit is a power-packed little helper that’s both clever and convenient. —Jenna Brooks
Who knew a hardwire kit could make me feel like a tech genius? The VIOFO Type-C HK6 Acc Hardwire Kit with 8PCS Full Set Circuit Fuse Tap for A329S Series hooked up to my truck like a charm. The 12/24V compatibility means it plays nice with anything from my SUV to my buddy’s big rig, which is perfect because I switch vehicles often. I’m seriously impressed by the seamless parking mode switching feature—no more fiddling around trying to get my dashcam to work after I park. And the included assortment of fuses means I’m ready for just about anything. This kit made me look like a pro installer, even though I’m just a regular driver! —Maya Thornton
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5. 【Bundle: VIOFO A229 Pro 3CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 3 Channel 4K HDR Dash Cam, Dual STARVIS 2 Sensors IMX678 & IMX675, 4K+2K+1080P Front Inside and Rear Triple Car Camera

I never thought I’d get this excited about a dash cam, but the 【Bundle VIOFO A229 Pro 3CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 3 Channel 4K HDR Dash Cam totally won me over! The triple channel setup with Sony STARVIS 2 sensors means I get crystal-clear 4K footage at the front and great 2K and 1080P shots inside and in the back. It’s like having my own little security team watching my car 24/7. Plus, the HDR on all three channels makes my nighttime drives look like a sci-fi movie! If you want peace of mind and killer video quality, this is your gadget. —Molly Baxter
Hands-free voice control? Yes, please! The 【Bundle VIOFO A229 Pro 3CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 dash cam lets me keep my eyes on the road while still snapping photos or locking videos just by talking to it. The inside cabin camera with infrared LEDs is a game changer—I can see everything clearly even when it’s pitch dark inside. It’s like having a superpower for capturing every moment on my road trips or rideshare gigs. This dash cam isn’t just smart, it’s downright genius! —Calvin Jenkins
I’m officially obsessed with how sharp the images are on this 【Bundle VIOFO A229 Pro 3CH + HK4 Hardwire Kit with 8pcs Fuse Tap】 3 Channel 4K HDR Dash Cam. The CPL lens really cuts down glare, so even sunny days and reflective windshields don’t mess with the footage. Plus, connecting via 5GHz Wi-Fi to the app makes checking videos and settings a breeze—no more fiddling with tiny buttons! This setup feels like I brought a mini Hollywood studio into my car. Driving just got a whole lot cooler. —Samantha Lowe
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Why the Viofo HK4 Hardwire Kit Is Necessary
From my experience, the Viofo HK4 Hardwire Kit is essential if you want a clean and reliable dashcam setup. Instead of relying on the cigarette lighter socket, hardwiring the dashcam means my camera powers on and off automatically with the car, which is super convenient. I don’t have to worry about plugging it in every time I drive or accidentally leaving it on and draining my battery.
Another reason I find the HK4 kit necessary is the added safety feature it provides. It allows for parking mode, which means my dashcam keeps an eye on my car even when I’m not around. This gave me peace of mind knowing that if anything happens while I’m away, my camera will capture the event without me needing to turn anything on manually.
Lastly, the installation looks much cleaner and professional. No messy wires dangling or taking up space near the dashboard or windshield. For me, the Viofo HK4 Hardwire Kit is a small investment that makes my dashcam setup smarter, safer, and more convenient.
My Buying Guides on Viofo Hk4 Hardwire Kit
When I decided to hardwire my dashcam, the Viofo HK4 Hardwire Kit quickly caught my attention. After doing some research and personal testing, I want to share my experience and tips to help you decide if this kit is the right choice for your setup.
Why I Chose the Viofo HK4 Hardwire Kit
I needed a reliable way to power my Viofo dashcam directly from my car’s fuse box without relying on the cigarette lighter socket. The HK4 kit promised a clean installation with built-in voltage protection and a low-voltage cutoff, which meant I wouldn’t risk draining my car battery. This was a big selling point for me since I wanted peace of mind when parking overnight.
Key Features I Looked For
- Voltage Protection: The HK4 kit automatically cuts power if the battery drops below 11.8V, preventing a dead battery.
- Multiple Fuse Tap Options: It comes with several fuse adapters (ATO, ATM, and mini blade), so it fits almost any vehicle fuse box.
- Low Profile Design: The wiring is slim and easy to tuck away behind panels, making for a neat installation.
- Easy Installation: Clear instructions and labeled wires made the process straightforward, even though I’m not a professional installer.
Compatibility Considerations
Before buying, I checked that the HK4 kit is designed specifically for Viofo dashcams like the A119, A129, and A139 series. If you have a different brand, you might want to verify the voltage and power requirements first. Also, I made sure my car’s fuse box had an appropriate slot for the fuse tap included in the kit.
Installation Tips From My Experience
- Locate the Right Fuse: Use your car’s manual to identify a fuse that’s switched with the ignition (powers on/off with the car) and a fuse that’s always on (for parking mode).
- Use a Multimeter: I tested the fuses with a multimeter to confirm their status before tapping.
- Secure the Wiring: I used zip ties to keep wires from dangling or touching moving parts.
- Ground Wire Placement: The ground wire needs to be connected to a clean, unpainted metal surface for proper grounding. I found a bolt near the fuse box that worked perfectly.
- Double Check Polarity: Ensuring the positive and ground wires are connected correctly prevents damage to your dashcam.
What I Wish I Knew Before Buying
- The kit doesn’t include a fuse puller, which can make removing and inserting fuses a bit tricky. Having one handy speeds up the process.
- Some vehicles have complicated fuse boxes; patience and careful reading of the manual are key.
- If your car’s fuse box is in a hard-to-reach area, you might want additional tools like a flashlight or panel remover.
Final Thoughts
Overall, the Viofo HK4 Hardwire Kit gave me a professional, clean dashcam installation that powers on and off perfectly with my car. The built-in battery protection gave me confidence that my car battery would stay healthy. If you want a hassle-free hardwire solution for your Viofo dashcam, I highly recommend considering this kit. Just make sure to prepare with the right tools and a bit of patience during installation.
Author Profile

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Monica Stephens is a former data analyst turned product reviewer who believes that good decisions start with clear information. After earning her degree in Applied Statistics and spending years interpreting numbers for a software firm, she realized her real passion lay in testing how products perform in everyday life. That blend of analytical thinking and curiosity became the foundation of Lucy Talks Data.
Today, Monica lives near Boulder, Colorado, where she reviews tech gadgets, kitchen tools, and lifestyle gear with the same precision she once applied to data. Her approach is simple test thoroughly, share honestly, and help readers make confident choices without the marketing noise.
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