My installed camera working great for 2 months but just noticed ( for how long) strange light issue? I was backing down my driveway and was using brakes to slow down. I noticed that my camera picture was flickering. So each time my brake lights go on, the camera picture flickers. In fact , there is a spot of applying the brakes that the picture will momentarily disappear ( black screen). How is this possible? Both of my "trigger" wires are wired to the back up light on the left side. I checked to see if my brake pedal had come in contact with the wires to the radio and those are properly secured away from the brake pedal. Also, when the brake lights are flickering along with my back up screen, the back up lights are bright and never flicker. Any ideas how this is possible? Could the illumination wire from the radio to the dash lights be causing this? The camera picture never dims--just flickers.

 

Standard brake lights, no LEDs?

What Year Ranger?
See if turn signals have same effect, they share common bulb in some years


What is the cameras power source?
Year would also help to look up brake light fuse BUS and cameras BUS to see if they are on the same BUS rail in the fuse box, they shouldn't be since brake light fuse has power 24/7, all the time
But Radio does have a constant 12v wire to hold presets

Other thing is engine at idle and alternator output, can you raise RPMs a bit and see if that helps, i.e. try backing UPHILL so RPMs are higher

 

2004 Ranger. For some reason, today the flickering when brake is applied is less prominent. Both test days were bright sunlight on driveway. Fuse #20 is for backup lights and there is not a brake light fuse but several brake components are on # 20 fuse. I'm assuming that the brake light itself is on # 20 fuse.
I tried the turn signal and yes the screen has a light flicker when turn signal flashes. The flasher is also on # 20 fuse.
The camera diagram shows the same power wire that connects to the back up lights, also connects to the camera and the trigger location on radio.
The brake lights are OEM but I changed the backup lights to bright LEDs. I don't know how much current the LED's are using but it should be less that OEM bulbs?

So it appears that flicker of the camera screen is caused by additional use of current on the #20 fuse. However, when applying brake, after the flicker, there is no change in brightness. Just occasional loss of screen for about 1 to 1.5 seconds.
I'm not sure there is a fix, but I will replace LED's on back up lights with OEM bulbs to see if there is a difference.

 

Google: 12volt backup camera noise filter

Seems to be a common issue

Brake light power is fuse 19 and no connection to fuse 20 except at battery

 

Thanks so much! I really missed that #19 fuse :(