I need a dashcam with a rear camera that connects via a single cable.

Almost all modern dual-channel dashcams (front + rear) use a single connecting cable running from the main front unit back to the rear camera to handle both power and video transmission.

Top-rated dashcams featuring a clean, single-cable rear camera setup include:

- [ROVE R3 3-Channel / Dual Dash Cam Go to product viewer dialog for this item.](https://www.google.com/search?ibp=oshop&prds=pvt:hg,pvo:29,mid:576462862743571929,imageDocid:285735683725855592,gpcid:11491001322688952176,headlineOfferDocid:12682331354952924228,catalogid:11622682190809766140,productDocid:2729591566183515361,rds:PC_11491001322688952176%7CPROD_PC_11491001322688952176&q=product&sa=X&ved=2ahUKEwi_5b3kncaWAxUPL7kGHZ3SEAYQxa4PeggIAggBCA4QBQ) : Uses a long single USB-C to USB-C ROVE Ultimate Rear Camera Cable from the main unit to power and sync the rear camera.[[1]](https://www.google.com/search?q=product&prds=pvt:hg,productid:12359254571704568053,catalogid:15376546354496216920,gpcid:6793119982640561023,mid:576462912449908103&ibp=oshop)

- [Thinkware U3000 4K Dual Dash Cam Go to product viewer dialog for this item.](https://www.google.com/search?ibp=oshop&prds=pvt:hg,pvo:29,mid:576462745914213842,imageDocid:6082906604980228100,gpcid:3048539249851300652,headlineOfferDocid:8411370272883158981,catalogid:6671516790679020113,productDocid:18326861907634812642,rds:PC_3048539249851300652%7CPROD_PC_3048539249851300652&q=product&sa=X&ved=2ahUKEwi_5b3kncaWAxUPL7kGHZ3SEAYQxa4PeggIAggBCA4QDA) : A high-end option utilizing a single robust rear connection cable paired with Sony STARVIS 2 sensors.[[1]](https://www.google.com/search?q=product&prds=pvt:hg,productid:18326861907634812642,catalogid:6671516790679020113,gpcid:3048539249851300652,mid:576462745914213842&ibp=oshop)

- [[Rexing V1P Flex X4 4K WiFi Dual Go to product viewer dialog for this item.](https://www.google.com/search?ibp=oshop&prds=pvt:hg,pvo:29,mid:576462790734275891,imageDocid:10944828120818900715,gpcid:18073685484661005774,headlineOfferDocid:16173868663159327355,catalogid:6712406123279482165,productDocid:11565475037322792511,rds:PC_18073685484661005774%7CPROD_PC_18073685484661005774&q=product&sa=X&ved=2ahUKEwi_5b3kncaWAxUPL7kGHZ3SEAYQxa4PeggIAggBCA4QFA) ](https://www.bestbuy.com/product/rexing-v1p-flex-x4-4k-wifi-dual-dash-cam-black/J3GTFKGFJY/sku/6582494?utm_source=feed) : Features a straightforward single-wire rear camera connection with a discreet profile and mobile app integration.[[1]](https://www.google.com/search?q=product&prds=pvt:hg,productid:11565475037322792511,catalogid:6712406123279482165,gpcid:18073685484661005774,mid:576462790734275891&ibp=oshop)

To help narrow down the best choice, let me know:

• Your budget range
• Do you want cloud connectivity / remote viewing , or just local SD card recording?
• Is your vehicle a sedan, SUV, or large truck (which affects required cable length)?

Yes — if by “single cable” you mean the rear camera connects to the front camera with one cable, while the front camera itself has its own power connection, there are good options.

My first choice would be the VIOFO A229 Pro 2CH. The front/rear connection uses a USB-C-to-USB-C cable, and the included rear cable is 6 m (about 20 ft).

• VIOFO A229 Pro 4K + 2K Front & Rear - $289.99 (Best Buy)

Good choices

• VIOFO A229 Pro 2CH — 4K front + 2K rear, USB-C rear-camera connection, excellent image quality. This is the one I'd buy.

• VIOFO A229 Ultra 2CH — 4K front + 4K rear and USB-C rear connection; a step up if you want maximum rear detail.

• VIOFO A329S 2CH — 4K front + 2K rear, newer/higher-end option.

• ROVE R2-4K Dual Pro — 4K front + 2K rear and a single rear-camera cable, but its USB-C-looking connector/cable is proprietary rather than a normal USB-C data cable.

• VIOFO A229 Pro 2CH - $289.99 (Best Buy)

• VIOFO A229 Ultra 2CH - $339.99 (Best Buy)

• VIOFO A329S 2CH - $399.99 (Best Buy)

• ROVE R2-4K Dual Pro - $249.99 (Best Buy)

Important: If you mean you want literally only one cable total coming from the front camera—with that single cable providing both power and the rear-camera signal—that's a different requirement. Most dual-camera systems, including the VIOFOs, have one power cable plus one rear-camera cable.

If that's what you mean, tell me “one cable total”, and I can find models specifically designed that way.

Modern dual-channel dashcams typically connect the main front unit to the rear camera using a single coaxial or USB Type-C cable.

This single wire handles both power delivery to the rear camera and video data transmission back to the front unit.

Top models featuring a clean, single-cable rear camera setup include:

Add to list Widely regarded as one of the best overall choices . It uses a very slim, highly flexible Type-C to Type-C single cable (roughly 6 meters/19.6 feet included) to link the front and rear cameras, supporting sharp 4K front and 2K rear video resolutions . You can explore the lineup at the VIOFO Store.

Add to list Uses a single USB Type-C rear camera cable to route power and signals cleanly. Check details on the ROVE Dash Cam Site.

Add to list A popular rear-view mirror style dashcam that connects the discrete rear camera via a single, straightforward multi-pin/extension cable plugged directly into the main front display unit.

If you'd like to narrow this down, let me know:

• Your preferred resolution (e.g., 2K vs 4K)
• Whether you want parking mode monitoring (which requires a hardwire kit)
• Your approximate budget

I can give you a tailored recommendation!

If you mean a dashcam where the rear camera connects to the front unit with one cable (no separate rear power wire), look for a 2-channel dashcam with a single rear camera cable. These are good options:

• VIOFO A229 Plus 2CH Dash Cam - $249.99 (Walmart.com)

• ROVE R2-4K DUAL Dash Cam - $199.99 (Best Buy)

• Rexing V1P 4K Dual Channel Dash Cam - $159.99 (Rexing)

• THINKWARE Q200 2CH Dash Cam - $199.99 (Walmart.com)

• VIOFO A229 Plus 2CH — A strong choice if you want high-quality front and rear video. The rear camera connects through a single rear cable (the included dual-channel cable system is designed for front/rear connection).

• ROVE R2-4K DUAL — Uses a single USB-C-to-USB-C rear camera connection cable on compatible models, making installation cleaner.

• Rexing V1P 4K Dual Channel — Front/rear recording with one rear camera connection cable rather than a separately powered rear camera.

• THINKWARE Q200 2CH — A reliable dual-channel option; Thinkware systems typically use a dedicated rear camera cable between cameras.

A few things to watch for:

• Avoid models where the rear camera has a built-in long cable permanently attached if you want the cleanest install.
• Confirm the cable type before buying: some use USB-C, some use proprietary connectors, and they are usually not interchangeable between brands.
• If your goal is one cable through the headliner from front to rear, the VIOFO A229 series and newer ROVE models are among the cleaner setups.

If you tell me your budget and whether you want rear window camera vs inside-cabin rear camera, I can narrow it down.

Most dual-lens (front and rear) dash cams actually require two separate wires in total: one power cable running from your car's power source to the front camera, and a second connecting cable running from the front camera to the rear camera.

However, modern multi-channel dash cams utilize a single thin connection cable (often a unified video/power USB-C or coaxial cable) to link the rear camera directly to the main front unit. You still have to plug the front camera into power, but you only have one single wire bridging the front and the back of the car.

Top-tier dash cam options featuring a single clean connection cable for the rear camera include:

VIOFO A229 Pro / Plus Go to product viewer dialog for this item. or A329S Go to product viewer dialog for this item. — These models use a very slim, highly flexible coaxial video cable or USB-C connection to link the front and rear cameras, making them easy to thread through rubber tailgate grommets and headliners. You can explore the lineup directly on the VIOFO Dash Cam Collection.

Vantrue N4 Pro / E3 Go to product viewer dialog for this item. / S1 Pro Go to product viewer dialog for this item. — Vantrue uses a streamlined dual Type-C / USB-C architecture where a single long cable links the rear camera data and power straight into the main front dashboard unit. Check out details on the Vantrue Store.

BlackVue DR770X / DR970X Box Go to product viewer dialog for this item. — If you want an ultra-hidden setup, these use a centralized separate recording box unit. Each camera plugs into the main box with a single discrete coaxial cable.

If you'd like to narrow this down, let me know:

• What vehicle type you drive (sedan, SUV, or truck)?
• Do you prefer 4K resolution or is 2K/1080p sufficient?
• Are you planning to hardwire it for parking mode?

Yes. I found several good dual-channel dash cams, but there’s an important distinction: “single cable” can mean one cable visible at the front camera, or literally one cable that carries both power and rear-camera video.

If you mean one cable running from the front unit to the rear camera, these are worth considering:

VIOFO A229 Pro 4K + 2K

$259.99

VIOFO A329S 4K + 2K

$399.99

Thinkware ARC 800

$329.99

Rexing F30 4K + 1080P

$129.99

My picks

1. VIOFO A229 Pro — best overall

• 4K front + 2K rear
• The rear camera connects to the front camera with a single dedicated cable, carrying the rear-camera connection.
• Excellent Sony STARVIS 2 sensors.
• Around $260–$330 depending on retailer/sale.

2. VIOFO A329S — best image quality

• 4K/60fps front + 2K rear
• USB-C connectivity between the cameras, which is particularly nice if you're trying to get a clean installation.
• Current testing rates it extremely highly for image quality.

3. Thinkware ARC 800

• 4K front + Full HD rear
• Conventional front/rear setup with the rear camera connected to the front.
• Good choice if you want a more polished, mainstream system.

4. Rexing F30 — inexpensive option

• 4K front + 1080p rear
• About $130 currently.
• A simpler option if you don't need 2K/4K recording from the rear.

One thing I'd clarify

If by “single cable” you mean the front camera itself should have only ONE cable coming out of it total, including both its power and the rear-camera connection, that's a much rarer design.

For example, BlackVue dual systems use a dedicated cable that carries power + video between the front and rear cameras, but the front camera still needs its separate power connection.

There are also some newer systems using USB-C for the rear-camera connection; VIOFO's A229 series is one of the options people specifically identify for this.

If you tell me exactly what you mean by “single cable” — e.g. “I want only one cable plugged into the front camera” — I can narrow this down to 2–3 models that actually meet that requirement, rather than just recommending ordinary front/rear kits.

Yes. If by “single cable” you mean one cable coming out of the front camera that carries both power and the rear-camera signal, there are a few options—but this is less common than the usual two-cable setup.

Best match: VIOFO A229 Plus / Pro

VIOFO A229 Plus 2CH

$199.99

The VIOFO A229 Plus 2CH is particularly interesting because the front-to-rear connection uses USB-C, rather than the older proprietary/coax-style connectors found on many dashcams. It records 2K front + 2K rear and has Wi-Fi/GPS.

However, there's an important distinction:

• One cable from the front camera to the rear camera: Yes
• Only one cable plugged into the front camera total, carrying power + rear video: No — the front camera still needs its separate power connection.
• If your goal is one visible cable running from the front toward the rear, this is a good fit.

If you mean literally ONE cable into the front camera

That's much harder to find. Some newer systems use a combined power/data architecture, and Pelsee models have been reported as doing this, but I'd want to verify the exact model before recommending one.

If you tell me what you mean by “single cable”—for example, “I want only one cable plugged into the front camera” versus “I just don't want separate rear-camera and power wires running across the windshield”—I can narrow it down to the best 3–5 models that actually meet that requirement.

Virtually all multi-channel (front and rear) dashcams operate using a single connecting cable running from the front camera to the rear camera. This single wire handles both the power supply to the rear lens and the video data transmission back to the main unit.

(Note: You will still need a separate power cable to plug the front camera into your car's fuse box or 12V/USB port, meaning there are two cables total attached to the front unit—one for power, and one single cable stretching back to the rear camera).

Top-tier dashcam models utilizing a streamlined single-connection cable for the rear camera include:

VIOFO's recent models use either a slim, highly flexible coaxial rear cable (on the A329 series) or a robust video-data USB type connection. They are widely praised for top-tier Sony STARVIS 2 sensor clarity and easy-to-hide thin wiring.

These utilize a streamlined single USB-C style connection wire from the main front unit to the rear camera, making routing through headliners and rubber door seals smooth.

Thinkware uses a proprietary single analog/digital rear cable connection (typically 7.5 meters long) that plugs cleanly into the port on the main front body.

These premium systems rely on a single streamlined coaxial video cable to link the front and rear cameras seamlessly.

If you'd like to narrow this down, let me know:

• What resolution you prefer (e.g., 4K vs 2K)
• Whether you want an interior-facing cabin camera included (3-channel setup)
• What vehicle type you drive (sedan, large SUV, truck)

I can recommend the exact model and cable length best suited for your ride.

If by “single cable” you mean the rear camera connects to the front dashcam with one cable (instead of a separate power wire + video wire), look for a 2-channel dashcam with a single rear-camera cable. Most modern systems do this, though the cable may carry both power and video/data.

Good options:

Vantrue E2 Dual Dash Cam

$219.99

VIOFO RE200 2K Rear Camera (for A229 series)

$79.99

BlackVue DR970X-2CH LTE Plus

$469.99

Rexing DT2 Dual Channel Dash Cam

$89.99

Best matches for your requirement

• VIOFO A229 series (A229 Plus / A229 Pro) — The rear camera uses a single Type-C rear cable connection. This is one of the cleaner installations if you specifically want one cable running to the rear.
• BlackVue DR970X-2CH / similar 2CH models — Uses a single coax-style rear camera cable carrying the rear camera connection; good if you want a professional-looking hidden install.
• Vantrue E2 — Front/rear dual recording with one rear-camera connection cable.
• Rexing DT2 — A budget dual-channel option; check the exact cable layout before purchase if a single-cable install is the priority.

A couple of things to avoid:

• “Wireless rear camera” dashcams often still need power at the rear, so they may not actually solve cable routing.
• Don’t assume rear cables are interchangeable between brands—even if they use similar connectors.

If you mean one cable total from the front camera to the rear camera that also powers the front unit (a combined power/rear-camera cable), that is much rarer. If you tell me your budget and whether you want a rear window camera or a rearview-mirror style camera, I can narrow it down.

Almost all dual-channel (front and rear) dashcams connect the front and rear cameras using a single interconnect cable that runs through your car's headliner or trim.

To clarify terminology: a standard multi-camera dashcam requires two wires in total for the complete setup:

1. One power cable that plugs the main front camera into your car's fuse box, OBD port, or cigarette lighter.
2. One single connection cable (often USB-C, micro-USB, or a proprietary coaxial/AV jack) running directly from the front camera to the rear camera to transmit both power and video data.

Top-rated modern dashcam models utilizing a streamlined single-cable connection between the main unit and the rear camera include:

Uses a very slim, high-quality USB-C to USB-C single cable to link the crystal-clear rear camera to the front unit . It features superior STARVIS 2 sensors for incredible night vision.

Comes with a single proprietary rear-camera connection cable and is well-regarded for its reliability, compact footprint, and robust thermal protection in extreme temperatures.

Uses a single long Type-C video/power interconnect cable running to the rear unit , offering multi-channel recording capabilities with clean wire management.

If you have a preference for resolution (like 4K vs 2K) , a specific budget , or need a system that handles parking surveillance mode , let me know and I can narrow down the best option for your vehicle.