I have a 2014 xl ranger with factory towbar, recently i fitted a wireless reversing camera to the rear of a caravan. I attached the trigger wires to the number plate light so that when the parkers or headlights were activated the camera would turn on.
The came tested fine on a 12 volt battery sending a wifi signal, hooked up to the parking lights the camera also worked fine when the vehicle parking lights and headlamp were activated.
Problem is that as soon as the vehicle is started the camera still recieves power to it but stops sending a wifi signal.
A mate thought it might be that the ranger sends a modulating pulse back to the caravan when hooked up. Can anyone throw some light on this problem.

 

Welcome to the North American Ranger forum

This is important because we could never buy or import your model T6 Rangers here, ours were the smaller version 1983 to 2011 only

Best bet is to try an Australia Ranger forum

But as to the question
The voltage of a running vehicle is 14volts and 12volts with engine off, shouldn't matter but could
The alternator is what creates the higher voltage and it uses Alternating Current(AC) to do that, which is converted to DC voltage
But a defective alternator could leak AC voltage, and that WILL cause issues with electronics

And is it the camera or RECEIVER that's the issue?
You can get a Free APP for a phone that will scan for available WiFi signals, you will be able to "see" camera ID signal
Then you can View if camera is broadcasting WiFi signal light on/engine off and then engine on

 

Thanks for the reply. The alternator is in good nick. I have the phone app you describe and once the vehicle is powered up the wifi on the camera stops broadcasting as a hot spot and the camera id disappears. A check of the voltage shows the camera is receiving power within its specs but stops transmitting the video.

 

Can't think of any reason other than the voltage difference between engine off and engine running, and power source(alternator), the battery is technically "offline" when alternator is on, because battery voltage is less than alternator voltage so voltage goes TO the battery, nothing comes out of the battery

There is no PWM(pulse width modulation) for running lights, just headlights use that for DRL(head lights on all the time when driving)

 

So

Hey just wondering whether you resolved this issue. I'm having the same problem.