The DMX709S is a versatile and feature-rich car stereo system manufactured by JVC. It’s equipped with a large touchscreen display that supports various multimedia inputs. Installing a backup camera to this system is straightforward, but it requires some basic knowledge of car electronics.
In this article, we will explain step-by-step how to connect a backup camera to the DMX709S, ensuring your camera works flawlessly with the system. The steps are easy to follow, and you don’t need advanced technical expertise, but you do need to carefully follow the instructions to avoid damaging your vehicle’s electrical system or the camera.
2. Components Needed for the Installation
Before starting the installation, ensure you have all the necessary components:
- Backup Camera: Choose a quality backup camera that fits your vehicle’s specifications and your budget. Many cameras are available with various features, such as night vision and wide-angle lenses.
- DMX709S Car Stereo: Ensure your JVC DMX709S car stereo is installed and operational.
- Camera Wiring Harness: Depending on the model of your backup camera, it may come with its own wiring harness. This makes installation easier and more organized.
- Video Cable: The video cable connects the backup camera to the DMX709S stereo.
- Power Cable: This connects to the vehicle’s reverse light circuit to activate the camera when the vehicle is in reverse.
- Wire Taps or Splice Connectors: These will help you connect the power wires to your vehicle’s reverse light.
- Tools: You will need a few basic tools, such as a screwdriver, wire strippers, electrical tape, and a wrench.
3. Preparation for Installation
Before installing the backup camera, prepare your vehicle and workspace:
- Park the Vehicle: Park your car on a flat surface, and make sure the engine is turned off, with the key removed from the ignition.
- Disconnect the Battery: For safety, it’s always a good idea to disconnect the negative terminal of the battery to avoid any accidental electrical shorts.
- Remove the Stereo: If you haven’t already installed the DMX709S, you’ll need to remove the existing stereo. Use a panel removal tool to detach the dashboard panels carefully. You may need to unscrew the screws holding the stereo in place.
4. Wiring the Backup Camera
Now that you’ve prepared your workspace, it’s time to wire the backup camera. The installation consists of two main connections: the video connection and the power connection.
Video Connection
- Connect the Video Cable: Your backup camera should come with a video cable. This cable typically has RCA connectors (a yellow jack). Connect the yellow RCA plug from the camera’s video cable to the corresponding input on the DMX709S. On the DMX709S, this will usually be labeled as “Camera In” or something similar.
- Route the Cable: Route the video cable from the back of the stereo to the location where the backup camera will be installed. Ensure you secure the cable with zip ties and avoid any moving parts, like the seat sliders, to prevent damage.
Power Connection
- Powering the Camera: The backup camera needs power to operate. Most cameras are powered by your vehicle’s reverse light circuit. When the car is in reverse, the reverse lights turn on, activating the camera.
- Splice into the Reverse Light Circuit: Find the reverse light wire in your vehicle (typically a purple or green wire). Using a wire tap or splice connector, connect the backup camera’s power wire to this reverse light wire. The camera will now receive power when the vehicle is put in reverse.
- Ground the Camera: The camera needs a ground connection. Find a suitable grounding point on the vehicle’s frame or use a metal part near the camera location. Use a wire and secure it to the ground point.
5. Connecting the Camera to the DMX709S
With the wiring in place, it’s time to connect the backup camera to the DMX709S:
- Locate the Camera Input on the DMX709S: On the back of the DMX709S, you will find several inputs for different video sources. Plug the video cable from the backup camera into the “Camera In” input.
- Ensure Proper Wiring: Double-check that the camera’s power wire is correctly connected to the reverse light circuit and that the ground connection is secure.
- Reinstall the Stereo: Once all the connections are made, you can reassemble the dashboard and reinstall the DMX709S into its mounting bracket. Ensure the stereo is securely fastened.
6. Configuring the DMX709S for Camera Input
After the camera is physically connected, you’ll need to configure the DMX709S to recognize the backup camera:
- Power on the DMX709S: Turn the vehicle’s ignition key to the “on” position and power up the DMX709S.
- Access the Settings Menu: On the home screen of the DMX709S, tap the “Settings” icon (gear icon) to enter the system settings.
- Enable Camera Input: In the settings menu, look for an option related to the camera. It may be labeled as “Backup Camera” or “Camera Settings.” Turn on the camera input to enable the system to display the camera feed when the vehicle is in reverse.
- Adjust the Camera Settings: Some DMX709S models allow you to adjust the camera display, including the guidelines or grid lines to assist with parking. Customize the settings based on your preference.
7. Testing the Backup Camera
With everything installed and configured, it’s time to test the camera:
- Start the Vehicle: Turn the key to the “on” position and shift the car into reverse.
- Check the Display: The DMX709S screen should automatically switch to the backup camera feed. Ensure the camera display appears clear and without distortion.
- Check Camera Alignment: Ensure that the camera is correctly aligned and that the view shown on the screen matches the rear of your vehicle. If the camera is misaligned, adjust it accordingly.
8. Troubleshooting Common Issues
If your backup camera isn’t working correctly, here are some troubleshooting tips:
- No Image on Screen: Double-check the video cable connection to ensure it’s properly plugged into the “Camera In” port on the DMX709S. Verify the power connections to the reverse light.
- Camera Not Turning On: If the camera isn’t receiving power, check the reverse light circuit connection. Use a multimeter to test whether the reverse light wire is providing voltage when the vehicle is in reverse.
- Poor Image Quality: Ensure that the camera lens is clean and free of obstructions. Also, verify that the camera is connected securely and is not loose.
- No Grid Lines: If the backup camera doesn’t display grid lines, check the settings in the DMX709S and ensure the option to show grid lines is enabled.
9. Conclusion
Adding a backup camera to your DMX709S is a great way to enhance safety and improve your driving experience. By following this guide, you can install the camera yourself with ease. Proper installation involves connecting the camera’s video and power cables to the DMX709S and ensuring the stereo is configured to display the camera feed.
Once everything is hooked up and tested, you’ll enjoy a clearer view of your surroundings while reversing, making parking and maneuvering your vehicle much safer.
