rear view caamera interference

[dpetepiece]

Because of a serious spinal cord injury which greatly restricts my ability to turn my head, I had an expensive rear view camera and ultrasonic sensors installed on my 2006 Vibe.

The camera is completely wired as this was supposed to avoid any performance issues compared to the cheaper ones using a radio signal between the camera and rear view mirror which becomes the video monitor when the car is put into reverse.

The car audio people who did the installation have been unable to eliminate the interference lines which appear on the video screen when the engine is running. When the engine is off the video is very clear. They have replaced every component including the shielded wiring but had no success. They seemed completely stumped and I don't think have the theoretical experience or education to investigate further.

The oem car radio works great. My suspicion is some form of stray signal from the alternator as with the key on but the engine not started all is good.

Has anyone had any experience like this?

dave p

[tpollauf]

Yep. Definitely related to the alternator How bad are these lines on the screen/monitor? can you live with them or not? Any way you can get a pic and post it for us to see? I am toying around with cameras in my work van (four of them) and will be doing a similar mod. The only difference is that I will have a solid state DVR recording 24/7 on motion so if anybody tampers with the van it would record immediately. While driving i would have a constant view of the rear, as well as the other angles. Also what brand and did you contact the manufacturer for advise/ suggestions? Curious about this

[dpetepiece]

http://www.crimestopper.com/" onclick="window.open(this.href);return false; was the supplier to the local car audio shop who did the installation.
My camera is model SV-5420.IC.BC which has infrared leds to see in the dark.
The Rear view mirror/monitor is SV-9152 which incorporates a 4.2 inch screen.

The installer had endless conversations with CRimestopper to no avail.
The lines are just annoying after spending a lot of money.
I am going to talk to a local firm who does mobile radio installations as I think they use an oscilloscope and have real electronics knowledge. I may try disconnecting the alternator to confirm my suspicion.

Taking a picture to show the interference may not be possible but I will try.

Dave p

[beemerphile1]

When I used to fiddle with stereos, I learned that the placement of the ground can be important. IIRC the term is ground loop interference. I imagine the car audio people know all about that though. Good luck.