If you're dealing with a BW7 backup camera system that shows "No Signal" on the screen (camera does not connect to display). Let’s systematically diagnose the issue to resolve the "No Signal" error.
Step 1: Verify Power Supply
The BW7 camera can be wired to either:
Reverse lights (activates only in reverse gear), or
Running lights (requires lights to be manually turned on for power).
Some pre-wired systems only send power to the camera when headlights are fully on (automatic settings may not activate them reliably).
Action Items:
✅ Ensure the corresponding lights (reverse/running) are on when testing.
✅ Check for a red IR LED glow on the camera when covered (confirms power is reaching the camera).
✅Verify the camera is receiving power by ensuring your truck's lighting system is manually activated. If your lights are set to 'Auto' mode, turned it off of auto.
✅ If installed on a trailer:
Confirm the tow vehicle is properly connected and running lights are on.
Direct Power Test:
Bypass the Furrion mount and connect the camera directly to a stable 12V source (e.g., trailer battery).
Expected Outcome: If the camera works consistently, the Furrion mount is likely the issue.
Voltage Check:
Use a multimeter to verify the Furrion mount delivers a steady 12V output when powered.
Note: Voltage readings below 11V may cause operational failures.
PWM Compatibility Check(Critical for LED Lights):
Some vehicles use Pulse-Width Modulation (PWM) or TPIM for lights, which may not provide stable power.
Key Indicator: If your reverse/running lights are LED, they may use PWM.
Solution: Install a 12V PWM Filter (hardwired item, available on etrailer.com) or use a 7-Way Adapter. (Not included)
Step 2: Inspect Wiring & Connections
Examine all connections for corrosion, loose terminals, or damaged wires.
Pay special attention to ground connections (ensure contact with bare metal).
Camera Power: Use a multimeter to verify 12V at the camera’s power wire when lights are active.
If voltage is low or absent:
Check for blown fuses.
Test with a direct 12V power source (e.g., spare battery) to rule out wiring issues.
Step 3: Signal Transmission Evaluation
Primary Symptom: No image despite confirmed power.
Signal Range Test:
Ensure the camera and monitor are within 50 feet without major obstructions.
Temporary metal interference (e.g., other parked vehicles) can disrupt signals.
Frequency Interference Check:
Move the trailer to a different location to rule out environmental interference.
Turn off nearby wireless devices (Wi-Fi routers, Bluetooth gadgets).
Channel Verification:
Confirm the monitor is switch to the correct channel (default: CAM1).
Re-pair the devices if necessary (power cycle both units during pairing mode).
Re-Pair the Camera & Display
Cover the camera's sensor with your hand - do the infrared (IR) lights turn on?
If NO: This indicates the camera isn't receiving power. Please check:
The power connection is secure
The power source is turned on
There are no blown fuses in your vehicle's circuit
If IR Lights Work But No Connection:
Let's try re-pairing the camera:
1. Power off the camera.
2. Set the screen to single channel.
3. Navigate to Menu > Pairing and start the countdown.
4. Only during countdown: Power the camera back on.
(Delay here is a common cause of pairing failure.)
5. Wait for the connection confirmation
Step 4: Test for Defects
Camera: Power it directly with a 12V battery. If it still fails, the unit is likely faulty.
Display: Connect another power source to confirm the screen works.
If the issue persists after these tests, your camera may be defective. To expedite a replacement:
🔹 Contact ZEROXCLUB support with:
Your order number
Shipping address
Vehicle/trailer model year
Photos/videos of the issue (if possible)
We’re committed to resolving this for you.
1 comment
Hello, my name is Shean Talbott. I am a technician at an independent auto shop. I had to do some Diagnostics through the dlc connector on a customers vehicle equipped with a wireless backup camera. I had to unplug his tuner from dlc. But power and ground was always supplied to the display. Batteries were never disconnected. Power is present to the camera as well(red infrared lights illuminate when covering camera). Also checked power with dmm at camera and display-11.5v measured. the display just stays on a blue and white bubbles page. I can navigate through settings and get to pairing section but havent been able to successfully pair the two. I followed the depower then pair and connect camera a couple times and have had no luck. Would appreciate some diagnostic help or advice on your rear camera system thanks! Customer ordered camera kit through amazon. Order #112-7045574-2213825. Shipping Address 4100 Trotwood DR, Lake Havasu City, AZ 86406-8065