Mirror Dash Cam Installation Guide

Mirror dash cams have become increasingly popular because they combine a traditional rearview mirror with modern dash cam technology.

Unlike standard dash cams, mirror dash cams offer a larger display, improved rear visibility, and front-and-rear recording in a single integrated system.

While installation may seem intimidating at first, most mirror dash cams can be installed with basic tools and a little patience.

This guide walks you through the entire process, from mounting the mirror display to connecting the rear camera and configuring the system.

What Is a Mirror Dash Cam?

A mirror dash cam replaces or attaches over your existing rearview mirror.

Most systems include:

Front camera
Rear camera
Mirror display
Power cable
Mounting straps
Optional hardwire kit

The front camera records the road ahead while the rear camera captures traffic behind your vehicle.

Many models also provide a live rear-view display while driving. If you're still deciding whether a mirror dash cam is right for you, our guide on Mirror Dash Cam vs Dash Cam covers the key differences between both types.

Tools You'll Need

Before starting, gather the following:

Mirror dash cam kit
Plastic trim removal tool
MicroSD card
Cable clips (optional)
Electrical tape (optional)
Hardwire kit (optional)

Having everything prepared beforehand will make installation easier.

Step 1: Mount the Mirror Dash Cam

Begin by attaching the mirror display to your factory rearview mirror.

Most mirror dash cams use adjustable rubber straps that secure the display over the existing mirror.

When positioning the mirror:

Keep the screen level
Ensure the front camera faces forward
Avoid blocking important controls
Confirm visibility remains comfortable

Once mounted, adjust the viewing angle to ensure the front camera captures the road properly.

Step 2: Install the Rear Camera

The rear camera is one of the most important components of a mirror dash cam system.

Common mounting locations include:

Inside Rear Window

Pros

Easier installation
Better protection from weather

Cons

Window tint may affect image quality

Outside Near License Plate

Pros

Unobstructed view
Better visibility during rain

Cons

More complex installation

Choose the location that best suits your vehicle and driving needs.

Step 3: Route the Rear Camera Cable

This is usually the longest part of the installation process.

Most drivers route the cable through:

Headliner
A-pillar trim
Door weather stripping
Rear side panels
Rear hatch or trunk area

Take your time and avoid forcing the cable into tight spaces.

Important: Do not route cables across airbag deployment areas.

Keeping wiring hidden helps maintain a clean factory appearance.

Step 4: Connect Power

Most mirror dash cams can be powered using the vehicle's 12V outlet.

Simply connect:

Power cable to the mirror display
USB or adapter cable to the vehicle power source

The system should automatically power on when the vehicle starts.

For basic installation, this is often the quickest solution.

Step 5: Optional Hardwire Installation

Drivers who want Parking Mode functionality may choose to install a hardwire kit.

A hardwire kit connects directly to the vehicle's fuse box and can provide power when the ignition is off.

Benefits of Hardwiring

Parking Mode recording
Cleaner cable management
Automatic power management

When selecting a hardwire kit, choose one with low-voltage protection to help prevent excessive battery discharge. The Pelsee Dash Cam Hardwire Kit includes built-in low-voltage cutoff and fuse tap adapters for a clean, safe installation.

Step 6: Insert and Format the Memory Card

Before recording:

Insert a compatible microSD card.
Power on the dash cam.
Format the card using the dash cam menu.

Formatting inside the camera helps ensure optimal performance.

Many manufacturers recommend high-endurance memory cards designed for continuous recording.

Step 7: Adjust Camera Angles

Proper camera alignment is critical.

Front Camera

The horizon should sit near the center of the frame.

Avoid pointing too high toward the sky or too low toward the hood.

Rear Camera

Ensure the camera captures:

Traffic behind the vehicle
Multiple lanes if possible
The road surface

Correct alignment improves footage quality and evidence capture.

Step 8: Configure Recording Settings

Most mirror dash cams allow drivers to customize settings.

Common options include:

Resolution

1080p
2.5K
4K

Loop Recording

Automatically overwrites old footage when storage is full.

G-Sensor

Locks important recordings during impacts.

Parking Mode

Monitors the vehicle while parked.

GPS

Records speed and location data.

Review these settings before daily use. For a complete walkthrough on initial setup and debugging, see our Ultimate Dash Cam Installation Guide.

Common Installation Mistakes

Mounting the Camera Too High

This may reduce the camera's field of view.

Leaving Loose Cables Visible

Poor cable routing can create distractions and affect appearance.

Ignoring Rear Camera Alignment

A poorly positioned rear camera may miss important details.

Using Low-Quality Memory Cards

Unreliable cards can lead to recording failures.

Forgetting to Format the Card

A newly installed memory card should always be formatted before use.

Mirror Dash Cam vs Traditional Dash Cam Installation

Mirror dash cams typically require more installation time because they include:

Larger display units
Rear camera wiring
Additional mounting steps

However, many drivers appreciate the integrated appearance and expanded visibility they provide.

Once installed, most systems require little ongoing maintenance.

Frequently Asked Questions

Are mirror dash cams difficult to install?

Most mirror dash cams can be installed by beginners using basic tools and following the included instructions.

How long does installation take?

A typical installation takes between 30 minutes and 2 hours depending on vehicle type and cable routing.

Do I need professional installation?

Many drivers install mirror dash cams themselves. Professional installation may be helpful for hardwire setups or exterior rear camera installations.

Can I use Parking Mode without hardwiring?

Some systems support external battery packs, but many Parking Mode features require a hardwire kit.

Where should I mount the rear camera?

The rear window and license plate area are the most common mounting locations.

Final Thoughts

Installing a mirror dash cam may seem complicated at first, but the process is straightforward when approached step by step.

By carefully mounting the display, routing cables properly, and configuring the system correctly, drivers can enjoy reliable front-and-rear recording along with improved rear visibility.

Whether you're upgrading your daily commuter, family SUV, or pickup truck, a properly installed mirror dash cam can provide valuable documentation and added confidence on every journey. If you're still choosing a model, the Pelsee S12 Pro Mirror Dash Cam is a popular option featuring a Sony STARVIS 2 sensor, 4K recording, and Parking Mode support. For a broader comparison of top models, our Best Mirror Dash Cam 2026 Buying Guide covers the leading options in detail.