The CAR8000 Jensen stereo system is a popular multimedia head unit offering advanced features like Bluetooth connectivity, touchscreen controls, and a backup camera interface. One common question many users have is how to keep the backup camera on while driving, especially for safety reasons, towing, or simply monitoring what’s behind the vehicle during motion.
By default, the system disables camera view outside of reverse gear for safety and legal compliance. However, with proper understanding and safe wiring modifications, it’s possible to work around this limitation.
In this article, we will walk you through everything you need to know to keep the backup camera on while driving with CAR8000 Jensen, including wiring options, switch installation, safety warnings, and best practices.
Understanding the Jensen CAR8000 Backup Camera System
The CAR8000 Jensen unit is designed to display the rear camera feed only when the car is in reverse gear. This is due to factory settings and built-in safety regulations. The reverse signal wire (often purple/white) activates the backup camera input on the screen when the gearshift goes into reverse. Once the vehicle is taken out of reverse, the image disappears.
This system works fine for routine backing up. However, many drivers who tow trailers, haul large loads, or drive long distances prefer having constant visibility behind them. Unfortunately, the CAR8000 doesn’t offer a native “manual rear-view” mode in its software like some premium models. That’s why understanding the electrical system is essential if you want to make a change.
Why Drivers Want to Keep Backup Cameras Active
There are several practical reasons drivers want to keep the backup camera on while driving:
- Towing trailers or RVs: Constant rear visibility helps monitor trailer sway, lane changes, and parking.
- Monitoring passengers or loads: Especially in commercial vans or family vehicles.
- Improved situational awareness: Rear-end collisions can be prevented by knowing what’s approaching from behind.
- Driving in tight spaces: Urban and tight parking areas can benefit from a continuous rear view.
Although it’s helpful, it’s also important to know that modifying how the camera works can have safety and legal implications.
Default Behavior of the Camera Input on CAR8000 Jensen
The CAR8000’s default behavior is controlled by software tied to vehicle gear input:
| Gear Shift Position | Camera Display | Trigger Signal |
|---|---|---|
| Reverse (R) | ON | Reverse wire +12V |
| Drive (D), Neutral | OFF | No signal to wire |
| Park (P) | OFF | Brake check only |
When the car goes into reverse, the system receives a +12V signal from the reverse light circuit via the camera trigger wire. This causes the screen to switch to the camera input. Once you shift into Drive, the voltage disappears and the video cuts off.
Wiring Options to Keep the Camera On While Driving
If you want the camera to stay on while the vehicle is in motion, the camera trigger wire must receive a constant or switchable power supply, mimicking the reverse gear behavior.
Here are some wiring solutions:
1. Toggle Switch Method
This is one of the safest and most reliable methods. It involves installing a switch that can send 12V to the reverse trigger wire manually.
- Tap into a 12V ignition or accessory line (so it only works when the car is on).
- Wire a toggle switch in-line with that power source and the reverse trigger wire.
- Flip the switch to simulate “reverse gear,” and the screen shows the rear camera feed.
This setup allows you to control when the camera is on, without interfering with normal reverse operation.
2. Constant Power Supply
In this setup, you connect the reverse trigger wire directly to a constant 12V source. This will keep the camera feed active at all times when the head unit is on.
While this works, it has downsides:
- It may interfere with system functions.
- You can’t turn it off manually unless a switch is added.
- It may drain the battery if not properly managed.
3. Ignition-Switched Power
Another alternative is connecting the trigger wire to an ignition-switched 12V source. This way, the backup camera will be active whenever the car is running. However, this will override the default camera activation logic, and again, a switch is recommended for control.
Step-by-Step Walkthrough: Toggle Switch Installation
Let’s go through a sample installation of the toggle switch method, which is a preferred approach for most DIYers.
Tools & Supplies Needed:
- Toggle switch (single pole, single throw)
- Wire stripper and crimper
- Diode (optional, to prevent backfeed)
- Electrical tape
- Fuse tap or 12V ignition source
Process:
- Locate the reverse trigger wire (usually purple/white) from the harness behind the Jensen CAR8000.
- Find a 12V ignition or accessory source—a wire that gets power when the key is turned to “ON”.
- Install the toggle switch between the 12V power source and the reverse wire.
- (Optional) Add a diode between the switch and the reverse wire to prevent voltage from feeding back into the reverse light circuit.
- Test your installation: With the car on, flip the switch. The camera feed should appear, just like when in reverse.
Safety and Legal Considerations
It’s important to stress that modifying your backup camera to stay on while driving might not be legal in all areas. Some local laws and regulations prohibit displaying video on a front-mounted screen while driving unless it’s for navigation or a permitted purpose.
Additionally, driver distraction is a concern. Never use the camera screen as a substitute for checking mirrors or being aware of your surroundings.
Before making any wiring changes, consult with a licensed automotive technician or installer, especially if your vehicle is still under warranty.
Troubleshooting Tips
If the camera doesn’t stay on after wiring:
- Check the voltage on the trigger wire with a multimeter.
- Make sure the switch is properly grounded and connected.
- Inspect fuse connections to ensure they’re seated securely.
- If the screen flickers or doesn’t respond, ensure the diode orientation is correct and connections are tight.
Alternative: Using a Separate Monitor
If you don’t want to modify the Jensen system directly, another safe route is using a dedicated rear-view monitor. These standalone displays can be wired to your backup camera feed independently, providing a full-time view without changing your stereo’s settings.
This is especially useful for commercial trucks or RVs where multiple camera views are needed.
Final Thoughts
While the CAR8000 Jensen stereo doesn’t officially support full-time rear camera viewing while driving, there are ways to work around this limitation with safe wiring and a proper switch setup. The toggle switch method is a practical and reversible solution that allows you to enable or disable the camera manually. Just be cautious, follow all safety standards, and respect local traffic laws.
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