cam fail

[Daz72]

Hi all i recently hardwired my cam but when the rear camera is plugged in nothing works, if i disconnect the rear camera the front cam works fine, has anyone came across this problem before?

 

[lufa6977]

No, not proper operation. If you use the cigarette lighter adapter, CLA, and power the unit, do both cams work? If both cams don't work with the CLA then you likely have an issue with one or both dashcams. Is this a new unit you have installed, or a re-install into another vehicle?

I presume you used the HK4 as the wiring harness? What is the vechicle is the A129 installed in?

 

[Daz72]

If I use the cigarette lighter everything works fine but there's a few times the rear cam picture has a blue fuzzy hue to it. yes I'm using the HK4 fitted in a 2022 Volkswagen polo.

 

[lufa6977]

If this is a new install, ensure the factory lens protector is removed from the rear camera lens. I believe the stream is digital, so it is unlikely a cable issue is causing the blue tint. However, if the rear cam is mounted, it may be the tint of the back glass, and or the sun striking the glass.

As for power, if the HK4 is not supplying sufficient power, then the HK4 may be bad, or the fuses used may not be the best fuses to use. Of course, one or both cams could have an issue as well.

As the unit seems to power fine on the CLA ( blue tint is another issue ), I would think there is an issue with the HK4, its wiring, or fuses used. Which fuses did you use for Constant Battery and Accessory power?

 

[Daz72]

I use 5 amp fuses on both

 

[DAP]

I use 5 amp fuses on both

The problem might be the resistance of the wires between the camera and the fuse. Adding the reverse camera will increase the current draw which might be enough to drop the voltage below that required to operate the camera. What gauge wire did you use to power the camera?

 

[Daz72]

The problem might be the resistance of the wires between the camera and the fuse. Adding the reverse camera will increase the current draw which might be enough to drop the voltage below that required to operate the camera. What gauge wire did you use to power the camera?

I used the HK4 to power the camera.

 

[Daz72]

looks like it may be a rear cam problem as i tried using the cigarette lighter to power and the rear cam doesn't work now. The front cam works perfect both hard wired and cigarette lighter.

 

[lufa6977]

looks like it may be a rear cam problem as i tried using the cigarette lighter to power and the rear cam doesn't work now. The front cam works perfect both hard wired and cigarette lighter.

Do you have a way to check the output voltage for the cable end that goes into the rear camera. If voltage at the cable end is good, then camera would be bad.

 

[Daz72]

Update, it turns out the main cam was faulty, i got a replacement so all is working fine now.