How to Hook Action Camera to Car Screen: Your Ultimate Guide for On-the-Road Filming

Imagine cruising down a breathtaking coastal highway, navigating an exciting track day, or simply documenting your daily commute with unparalleled clarity. What if you could see exactly what your action camera is capturing, in real-time, right on your car’s built-in display? The days of guessing your shot or waiting until you’re home to review footage are over. Connecting your action camera directly to your car screen transforms your vehicle into a mobile command center for capturing every moment, every turn, and every scenic vista.

This comprehensive guide will walk you through everything you need to know about how to hook action camera to car screen. Whether you’re a seasoned vlogger looking to enhance your content, a driving enthusiast aiming for a perfect lap analysis, or just someone who wants a superior dashcam experience, unlocking this capability can revolutionize your in-car recording. We’ll cover the essential equipment, various connection methods, troubleshooting tips, and optimization strategies to ensure you get the most out out of your setup.

Prepare to elevate your driving and filming experience. By the end of this article, you’ll have all the knowledge and actionable steps required to seamlessly integrate your high-definition action camera with your car’s display, turning your on-the-road vision into a tangible, real-time feed. Let’s dive into the exciting world of in-car action camera connectivity!

Quick Answers to Common Questions

Can I really hook my action camera to my car screen for live viewing?

Yes, you absolutely can! It’s a fantastic way to get a wider, more dynamic view of the road or track right from your dash.

What essential gear do I need to hook my action camera to my car screen?

You’ll typically need an action camera with an HDMI output, an HDMI to RCA or USB converter (depending on your car screen’s inputs), and the appropriate cables.

What’s the most common way to physically hook an action camera to a car screen?

The most reliable method often involves connecting your action camera’s HDMI output to a converter, then plugging that into your car screen’s RCA (yellow video) or USB input.

Can I wirelessly hook my action camera to my car screen?

While some advanced systems allow it, a direct wired connection is generally more stable for real-time viewing. For wireless, you’d usually need a dedicated wireless video transmitter/receiver kit.

My car screen doesn’t have an RCA or HDMI input; how can I still hook my action camera to it?

If your car screen lacks direct inputs, you might explore external display solutions like a dedicated monitor or a video interface that adds inputs to your existing car system.

Why Connect Your Action Camera to Your Car Screen? The Benefits Unveiled

Before we delve into the technicalities of how to hook action camera to car screen, it’s worth exploring the myriad benefits this setup offers. It’s far more than just a novelty; it’s a powerful tool that enhances safety, improves content creation, and offers immediate visual feedback.

Enhanced Monitoring for Safety and Security

One of the primary advantages of linking your action camera to your car display is the ability to use it as a superior dashcam. Traditional dashcams are often limited in resolution, field of view, and advanced features. An action camera, designed for high-intensity capture, offers incredible clarity, wide dynamic range, and often a much broader field of view, ensuring you catch every detail. Having a live feed on your car screen means you can constantly monitor what’s happening around your vehicle, especially in blind spots or when parking in tight spaces. This real-time visibility significantly boosts your situational awareness, potentially preventing accidents and providing undeniable evidence in case of incidents. Imagine being able to clearly see the car behind you while backing up, or monitoring your trailer contents during a long haul.

Perfect for Vlogging and Content Creation

For content creators, automotive enthusiasts, and travel vloggers, this setup is a game-changer. No more guessing if your camera is perfectly aligned or if that scenic shot is framed correctly. With a live preview on your car screen, you can adjust your camera angle, check exposure, and ensure your subject is always in frame, all without pulling over or awkwardly reaching for your camera. This immediate feedback loop saves valuable recording time, reduces the need for reshoots, and ultimately leads to higher-quality, more professional-looking footage. Whether you’re capturing a road trip, reviewing a driving performance, or filming a car review, seeing exactly what your audience will see, live, is an invaluable asset.

Real-time Playback and Review

Beyond live monitoring, the ability to instantly play back footage on a larger screen is incredibly useful. Just finished an exciting segment of your journey or a particularly challenging track lap? You can immediately review the footage, analyze your performance, or share a thrilling moment with passengers. This quick review capability is excellent for learning and improvement, allowing you to identify areas where you can optimize your driving or refine your camera angles for future takes. It also serves as an instant verification tool, should you need to reference an event that just occurred.

Superior Image Quality Over Standard Dash Cams

Action cameras are built to capture high-resolution, stable footage in diverse and challenging environments. They often feature advanced stabilization, excellent low-light performance, and robust construction. When used as a dashcam or filming device connected to your car screen, you’re leveraging this superior technology. You’ll get sharper images, more vibrant colors, and smoother video compared to most dedicated dashcams on the market. This translates into clearer license plates, more discernible road conditions, and simply more stunning visuals for your content. The difference in quality can be stark, especially when footage is critically examined.

Essential Gear You’ll Need for the Connection

Successfully figuring out how to hook action camera to car screen starts with having the right equipment. Compatibility is key, so pay close attention to the input/output options on both your camera and your car’s display unit. Here’s a breakdown of the essential gear:

Your Action Camera (GoPro, DJI Osmo Action, Insta360, etc.)

Naturally, you’ll need your action camera. Most modern action cameras from brands like GoPro, DJI Osmo Action, Insta360, and others offer various output options. Check your camera’s specifications for its video output capabilities. Common outputs include:

• Micro HDMI or Mini HDMI: This is the most common and often preferred output for high-definition video. Most GoPros (Hero 4 Black and older, some Hero 5/6/7 with Media Mod) and DJI Osmo Action series, along with many other action cameras, feature this port.
• USB-C (with DisplayPort Alt Mode or MHL): Some newer cameras and smartphones use USB-C for video output, though this is less common for direct camera-to-screen connection without an adapter.
• Analog A/V Output (3.5mm jack or proprietary): Older action cameras or specialized models might offer an analog video output, typically a 3.5mm jack that combines audio and video, requiring a special cable to split into RCA (yellow for video, white/red for audio). This is less common in modern HD cameras.

Compatible Cables (HDMI, USB, A/V)

Once you know your camera’s output, you’ll need the corresponding cable. Always opt for high-quality, shielded cables to minimize interference and ensure a stable connection, especially in a car environment where electrical noise can be present.

• Micro HDMI to HDMI or Mini HDMI to HDMI: If your camera has a micro or mini HDMI port, you’ll need a cable that goes from that specific size to a standard HDMI (Type A) connector for your car screen.
• USB-C to HDMI Adapter/Cable: If your camera outputs video via USB-C (and supports it), you might need a dedicated USB-C to HDMI cable or an adapter.
• 3.5mm to RCA Cable: For analog A/V output, you’ll need a cable that converts the 3.5mm jack to standard RCA (Composite Video + L/R Audio).
• USB Data Cable: While not for live video, a standard USB-A to USB-C/Micro USB cable might be used for media playback from your camera if your car screen supports it.

Car Screen Input Options (HDMI, USB, RCA/A/V, Wireless)

This is the other critical half of the equation. Your car screen must have a compatible input to receive the video feed. Check your car’s manual or visually inspect the dashboard and center console for ports.

• HDMI Input: The best-case scenario. Many newer cars, particularly those with premium infotainment systems, have a full-size HDMI input. This offers the best quality and simplest connection for digital video.
• USB Input: Most cars have USB ports, but these are primarily for charging or playing media from a flash drive. Some advanced systems might support video playback from a USB-connected device, but direct live camera feed via USB is rare without specific MHL/DisplayLink support.
• RCA (Composite Video) Input: Common in older cars or aftermarket head units. This is an analog input (typically a yellow RCA jack for video) and will offer lower resolution compared to HDMI, but it’s a reliable option for older systems.
• Wireless Mirroring (Apple CarPlay/Android Auto/Miracast): While not a direct camera input, some action cameras (or connected smartphones running camera apps) can wirelessly mirror to compatible car screens. This offers flexibility but can introduce latency.

Power Source Solutions

Running your action camera continuously will quickly drain its battery. You’ll need a reliable power source.

• USB Car Charger: A standard car charger that plugs into your 12V cigarette lighter socket or a dedicated USB charging port. Ensure it provides sufficient amperage (at least 2A, preferably 3A for fast charging) to power your camera while it’s operating.
• Power Bank: A high-capacity portable power bank can also serve as a power source, offering flexibility if you don’t want cables running to your car’s power outlets.

Mounting Solutions for Optimal Viewing

A stable mount is crucial for both the action camera and, potentially, an external monitor if your car doesn’t have a suitable built-in screen. For the camera, consider:

• Suction Cup Mounts: Great for windshields, dashboards, or exterior car body panels. Ensure it’s robust and designed for action camera weight.
• Adhesive Mounts: Permanent or semi-permanent options for specific locations.
• Roll Bar Mounts: For track enthusiasts, ideal for securing cameras inside or outside on roll cages.

Step-by-Step Guide: Different Connection Methods Explained

Now that you have your gear ready, let’s explore the various methods for how to hook action camera to car screen. The method you choose will depend on the ports available on both your action camera and your car’s infotainment system.

Method 1: HDMI Connection (The Gold Standard)

The HDMI connection is the preferred method due to its ability to transmit high-definition digital video and audio simultaneously with minimal latency. Most modern action cameras and newer car infotainment systems offer HDMI compatibility.

1. Identify Ports: Locate the Micro HDMI or Mini HDMI output on your action camera and the standard HDMI input on your car screen.
2. Connect Cables: Plug one end of your Micro HDMI to HDMI (or Mini HDMI to HDMI) cable into your action camera.
3. Connect to Car: Plug the other end of the cable (standard HDMI) into the HDMI input port on your car’s infotainment system.
4. Power On Camera: Turn on your action camera.
5. Select Input on Car Screen: Navigate your car’s infotainment menu to select the HDMI input source. This might be labeled “HDMI,” “AUX HDMI,” or a similar option.
6. Verify Display: Your action camera’s live feed should now appear on your car screen. Ensure both video and audio (if applicable) are working correctly.
7. Power Camera: Connect your camera to a USB car charger to ensure continuous power during operation.

Pro Tip: Some action cameras, like certain GoPro models, might require a “Media Mod” accessory to enable HDMI output. Always check your camera’s specific requirements.

Method 2: USB Connection (For Data Transfer or Limited Display)

While USB is ubiquitous, its use for live video feed to a car screen is less common and more conditional. Typically, USB is for charging, data transfer, or playing pre-recorded media. However, some advanced car systems or cameras with specific protocols might allow for some form of display.

1. Identify Ports: Locate the USB-C or Micro USB port on your action camera and a USB-A port on your car’s infotainment system.
2. Connect Cables: Use a standard USB data cable (USB-A to USB-C or Micro USB) to connect your camera to the car’s USB port.
3. Power On Camera: Turn on your action camera.
4. Select Input on Car Screen: Navigate your car’s infotainment menu to select the USB input source. The car screen might detect the camera as a storage device.
5. Check for Playback/Display: Your car screen might offer to browse the camera’s files for playback, or in rare cases, if the camera supports USB video class (UVC) and the car system is compatible, a live feed might appear. This is highly system-dependent.
6. Power Camera: If the car’s USB port doesn’t provide enough power, connect your camera to an additional USB car charger.

Note: Direct live video output via standard USB is not guaranteed and often not supported for real-time monitoring. This method is primarily for viewing stored footage or as a charging solution.

Method 3: A/V (RCA) Connection (Older Cars, Analog Signal)

This method is relevant for older vehicles or aftermarket head units that feature analog RCA input jacks (typically yellow for video, red/white for audio). This is an analog signal, so expect lower resolution compared to HDMI.

1. Identify Ports: Locate the 3.5mm A/V output (if present) on your action camera. On your car screen, identify the yellow (video), white (left audio), and red (right audio) RCA input jacks.
2. Connect Cables: Plug the 3.5mm end of your 3.5mm to RCA adapter cable into your action camera.
3. Connect to Car: Connect the RCA plugs (yellow to yellow, white to white, red to red) to the corresponding input jacks on your car’s system.
4. Power On Camera: Turn on your action camera.
5. Select Input on Car Screen: Navigate your car’s infotainment menu to select the “AUX,” “A/V,” or “Video In” input source.
6. Verify Display: Your action camera’s live feed should now appear on your car screen. Check for both video and audio.
7. Power Camera: Connect your camera to a USB car charger for continuous power.

Consideration: Not all action cameras offer a 3.5mm A/V output. This is more common on older models or specialized cameras. The video quality will be standard definition.

Method 4: Wireless Mirroring (Advanced & Convenient)

This method involves wirelessly transmitting your camera’s view, usually through an intermediary device like a smartphone, to a car screen that supports wireless mirroring technologies like Apple CarPlay, Android Auto, or Miracast.

1. Camera to Smartphone: Connect your action camera to your smartphone via Wi-Fi and the camera’s dedicated app (e.g., GoPro Quik, DJI Mimo, Insta360 App). You should see the live feed on your phone.
2. Smartphone to Car Screen (Wired CarPlay/Android Auto): If your car supports wired CarPlay/Android Auto, connect your smartphone to the car’s USB port. Once CarPlay/Android Auto is active, open your camera’s app on your phone. While some apps may display video, direct mirroring of the phone screen might be restricted by car safety protocols.
3. Smartphone to Car Screen (Wireless CarPlay/Android Auto or Miracast): If your car supports wireless CarPlay/Android Auto or Miracast/Screen Mirroring:
   • Enable wireless connection between your phone and car.
   • Open your action camera app on your phone.
   • Attempt to view the live feed. Again, direct screen mirroring might be restricted or require specific app compatibility with the car system.
4. External Wireless Receiver (e.g., Chromecast/Fire Stick): For cars with an HDMI input, you could theoretically plug in a wireless HDMI receiver (like a Google Chromecast or Amazon Fire TV Stick). Then, cast your phone’s screen (which is displaying the camera’s live feed) to the receiver. This introduces complexity and potential latency.
5. Power Camera and Phone: Ensure both your action camera and smartphone are well-charged or connected to power sources, as wireless transmission and live viewing consume significant battery.

Latency and Restrictions: Wireless methods often introduce some latency (delay), which might not be ideal for real-time monitoring, especially for fast-paced driving. Furthermore, car manufacturers often disable video mirroring while driving for safety reasons, so this method might be best suited for stationary use.

Troubleshooting Common Connection Issues

Even with the right gear and knowledge, you might encounter hiccups when you hook action camera to car screen. Here are some common problems and their solutions to help you get back on track.

“No Signal” or Black Screen

This is perhaps the most frequent issue. It indicates that the car screen isn’t receiving a valid video signal from your action camera.

• Check Cable Connections: Ensure all cables (HDMI, USB, RCA) are securely plugged into both the camera and the car’s input ports. A loose connection is a very common culprit.
• Verify Input Selection: Double-check that you’ve selected the correct input source on your car’s infotainment system (e.g., HDMI 1, AV In, AUX Video).
• Camera Output Mode: Some action cameras require you to specifically enable or switch to an HDMI output mode in their settings. Check your camera’s manual.
• Cable Integrity: Try a different HDMI or A/V cable. Cables can go bad, especially after repeated bending or if they are low quality.
• Camera Power/Mode: Ensure your action camera is powered on and in a mode that supports live video output (e.g., not in playback mode if you want a live feed).
• Resolution/Refresh Rate Mismatch: While less common with modern HDMI, very old car screens might struggle with higher resolutions or refresh rates. Check your camera’s HDMI output settings and try a lower resolution if available (e.g., 1080p instead of 4K).

Audio Not Working

You have video, but no sound. This indicates a problem with the audio transmission.

• Check Volume Levels: Ensure the volume on both your action camera (if it has audio output control) and your car’s infotainment system is turned up.
• Cable Integrity (Audio): If using RCA, ensure the red and white audio cables are securely connected. If using HDMI, try a different HDMI cable.
• Camera Audio Settings: Some cameras allow you to disable audio output via HDMI. Check your camera’s settings.
• Car System Audio Source: Verify that your car’s infotainment system is set to receive audio from the correct input source alongside the video. Sometimes video and audio inputs can be separate on older systems.
• HDMI Audio Handshake: For HDMI, sometimes simply unplugging and replugging the HDMI cable (with both devices powered off, then on) can re-establish the audio “handshake.”

Lag or Choppy Video

If your video feed is delayed or stutters, particularly with wireless connections, several factors could be at play.

• Cable Quality: For wired connections, a low-quality or excessively long HDMI cable can introduce signal degradation. Use a high-quality, appropriately-sized cable.
• Wireless Interference: For wireless mirroring, Wi-Fi interference, distance from the source, or obstacles can cause lag. Try to minimize these.
• Processing Power: If using a smartphone as an intermediary for wireless mirroring, ensure your phone has sufficient processing power and isn’t bogged down by other apps.
• Camera Settings: High-resolution (4K) and high frame rate (60fps+) video can demand more bandwidth and processing. Try lowering your camera’s output resolution or frame rate settings if your car screen or connection method is struggling.
• System Resources: Ensure your car’s infotainment system isn’t under heavy load from other applications.

Power Supply Problems

Your camera shuts off unexpectedly, or the display flickers.

• Insufficient Power: Action cameras consume significant power when recording and transmitting video. Ensure your USB car charger delivers enough amperage (at least 2A, ideally 3A or more). Standard 1A ports may not be sufficient.
• Cable Quality (Power): Use a high-quality USB charging cable. Cheap cables can limit power delivery.
• Loose Connection: Check the power connection to the camera and the car charger.
• Battery Health: If relying on the camera’s internal battery without external power, ensure the battery is fully charged and in good health.

Incompatible Formats

Though less common with direct HDMI, some car systems might have specific format requirements.

• Video Format: Most car screens accept standard video formats. If your camera allows for different output formats (e.g., NTSC/PAL), ensure it matches your car screen’s region.
• HDMI Version: Very old car screens might not fully support newer HDMI versions (e.g., HDMI 2.0). Generally, newer devices are backward compatible, but it’s a rare possibility.

Optimizing Your Setup: Tips for the Best Experience

Once you’ve successfully managed how to hook action camera to car screen, a few optimization tips can significantly enhance your experience, whether you’re using it for safety, vlogging, or track days.

Choosing the Right Mount and Placement

The stability and location of your action camera are paramount for clear, steady footage and optimal viewing. For a car setup:

• Windshield Mount: A strong suction cup mount on the windshield near the rearview mirror is often ideal. It provides a clear, unobstructed view and is less prone to vibrations than dashboard mounts. Ensure it doesn’t obstruct your driving view.
• Dashboard Mount: If a windshield mount isn’t feasible, a sturdy adhesive or weighted dashboard mount can work. Be mindful of reflections from the dashboard onto the windshield.
• Exterior Mounts: For unique angles or track use, consider exterior mounts on specific body panels. Always use professional-grade, tested mounts for exterior use and check local regulations.
• Test Drive: Always do a short test drive to ensure the camera is securely mounted and the footage is stable before any serious recording.

Power Management and Battery Life

Action cameras are power-hungry, especially when recording 4K video and outputting to an external screen. Constant power is essential:

• Dedicated Car Charger: As discussed, use a powerful USB car charger plugged into your 12V socket. Ensure it provides at least 2A, preferably 3A for sustained recording.
• Power Bank as Backup: A high-capacity power bank can be a great backup or primary power source for shorter trips, offering flexibility.
• Cable Routing: Neatly route your power and video cables to avoid tangles, interference, and obstruction of controls or airbags. Use cable clips if necessary.

Recording Settings for Car Use (Loop Recording, Wide Angle)

Optimize your camera’s settings for in-car use to get the best results:

• Resolution and Frame Rate: While 4K looks great, 1080p at 60fps often provides a good balance of detail, smoothness, and manageable file sizes. If your car screen is 1080p, recording in 4K might be overkill for the live feed, but still beneficial for post-production.
• Field of View (FOV): Use a wide-angle FOV (e.g., “Wide” or “SuperView” on GoPro) to capture as much of the road and surroundings as possible.
• Electronic Image Stabilization (EIS) / HyperSmooth: Keep stabilization enabled to ensure your footage is smooth, even over bumps and vibrations.
• Loop Recording: If using as a dashcam, enable loop recording. This feature records continuously, overwriting the oldest files when the memory card is full. Set the loop duration according to your needs.
• Exposure Settings: Consider using a neutral color profile and manual exposure settings if you’re an advanced user, to handle varying light conditions (e.g., bright sunlight to shadows).

Data Storage Considerations

High-resolution video takes up a lot of space. Be prepared with adequate storage:

• High-Capacity SD Cards: Invest in high-speed, high-capacity microSD cards (UHS-I U3 or V30 recommended, 128GB or 256GB).
• Multiple Cards: Carry spare microSD cards, especially for long trips or extended recording sessions.
• Offloading Footage: Regularly offload footage to a larger storage device (laptop, external hard drive) to free up space on your camera’s card.

Legal Aspects and Privacy

Before you start recording, be aware of the legal and privacy implications:

• Local Laws: Familiarize yourself with local laws regarding in-car recording, especially concerning privacy (e.g., filming other people without consent) and dashcam usage. Some jurisdictions have restrictions on where cameras can be mounted on the windshield.
• Passenger Consent: If you’re filming passengers, it’s generally good practice to inform them and get their consent, especially if the footage will be shared publicly.
• Public Spaces: While filming in public spaces is generally permissible, be mindful of privacy concerns when capturing identifiable individuals.

Comparison of Action Camera to Car Screen Connection Methods

To help you decide the best approach for how to hook action camera to car screen, here’s a comparative table of the common connection methods:

Connection Method	Pros	Cons	Best For	Compatibility Notes
HDMI (Micro/Mini)	High-definition digital video & audio, minimal latency, reliable signal.	Requires compatible ports on both camera & car. Cables can be bulky.	Real-time monitoring, high-quality vlogging, modern car systems.	Most modern action cameras, newer car infotainment systems.
USB-C (Video Output)	Digital signal, potentially high resolution.	Less common for direct live video from action cameras. Specific camera/car support needed.	Niche setups, newer cameras/cars with specific UVC/MHL support.	Limited camera models (often requires DisplayPort Alt Mode), specific car system support.
A/V (RCA)	Wide compatibility with older car screens/aftermarket units, simple analog connection.	Lower resolution (standard definition), analog signal susceptible to noise.	Older cars, basic monitoring, when HDMI/USB isn’t an option.	Older action cameras, cars with analog RCA inputs.
Wireless Mirroring (via Smartphone)	Wireless convenience, no physical cables to the car screen (if car supports wireless CarPlay/Android Auto).	Higher latency, potential for signal dropouts, often restricted while driving, relies on smartphone.	Stationary display, basic monitoring, content review (if permitted by car system).	Cameras with Wi-Fi & companion app, cars with Apple CarPlay/Android Auto/Miracast.

Conclusion: Your Car, Your Cinematic Canvas

Mastering how to hook action camera to car screen opens up a world of possibilities, transforming your vehicle into a dynamic platform for capturing, monitoring, and reviewing your journeys. From enhancing safety with a crystal-clear dashcam feed to elevating your vlogging game with real-time framing, the benefits are clear and compelling.

We’ve explored the essential gear, walked through the step-by-step processes for various connection methods—from the high-fidelity HDMI to the widely compatible RCA and even advanced wireless options—and provided practical solutions for common troubleshooting scenarios. Remember, the key to a seamless setup lies in understanding the capabilities of both your action camera and your car’s infotainment system, and choosing the right cables and power solutions.

By following the actionable tips for optimization, including smart mounting, effective power management, and tailored recording settings, you’ll ensure your on-the-road footage is always stable, clear, and perfectly framed. So, gear up, connect your camera, and start capturing every exhilarating moment of your drive with confidence and precision. Your next great adventure, seen live from your dashboard, awaits!

Frequently Asked Questions

How do I hook an action camera to a car screen for live video?

The primary method involves a wired connection, typically using an HDMI or USB cable, depending on the ports available on both your action camera and your car’s display unit. You’ll need to identify the output port on your camera and the input port on your car screen to ensure compatibility.

What types of cables are commonly used to connect an action camera to a car screen?

Most modern action cameras feature a Micro HDMI or Mini HDMI output, which can be connected to a car screen’s HDMI input using the appropriate adapter cable. Some older cameras or car systems might use a composite video (RCA) connection, requiring a different type of cable or converter.

How can I power my action camera while it’s connected and displaying on the car screen?

It’s crucial to ensure your action camera has a continuous power source to prevent it from running out of battery during extended use. You can typically power it via a USB cable plugged into your car’s USB port or a 12V cigarette lighter adapter, often while simultaneously outputting video.

Is it possible to hook my action camera to my car screen wirelessly?

Yes, some action cameras offer Wi-Fi direct streaming capabilities, allowing you to wirelessly cast the feed to a compatible car display or a separate Wi-Fi receiver connected to your car’s screen. This method often requires additional equipment or a car system with built-in wireless display mirroring features.

What if my car screen doesn’t have an HDMI input to connect my action camera?

If your car screen lacks an HDMI input, you might still be able to connect your action camera using a suitable converter. For instance, an HDMI to RCA (composite) converter can adapt the video signal for older car screens that only have yellow RCA video input jacks.

Will there be any video lag or quality issues when viewing my action camera on the car screen?

The video quality and potential for lag largely depend on the connection type and the resolution capabilities of both your action camera and car screen. A direct HDMI connection usually provides the best quality with minimal latency, while wireless connections or analog composite signals might introduce more delay or a lower resolution image.