Someone comments under the video that you have to install a relay "onto the voltage wire and colelct the 12V from fuse or somewhere the voltage is stronger with power"
Not being electrically minded it means nothing to me though :wacko: :)
When car ignition is on the rear view camera is perfect. But when the rear view camera is activated when engine is running there is lines and sometimes not even a display from the camera as per the video above
It is possible the engine (eg - the ignition/ ht leads or alternator etc) is interfering with the signal (either air-bourn or through the cables/power supply)
On the original Golf HTI 16v, the radio ariel was relocated to the back of the roof because the engine interfered with the radio in the normal position- thus starting the trend for rear mounted arials (it was not intended as a styling or aerodynamic thing)
If you took the (power) feed for the head unit and camera derectly from the battery, that will help with power/ cable bourne interference (you may need an extra/ additional power switch for the audio) as the battery acts as filter/ damper to power-bourn interference - you can also add filters/ suppressors
Careful shielding would help with the air-bourne (radio/ rfi) interference, (eg co-axially shielded cable for the video feed) and adding ferrite cores/ chokes to the signal wires
re-routing the earths can help too ,
there is also a possibility that the voltage changes/ raises when the engine is running (eg upto 16v) due to the smart-charge system - and the camera cannot handle this voltage - a voltage regulator could help
Alternatively you could try a different camera (it may cope with the conditions(voltage/ interference) better)
Excellent post there FOCA.I was going to say interference from the engine for sure
Thanks - yes, there must be a reason it works with the engine off - interference from the engine is the most likely culprit
The power to the camera should be attached to the power to one of the reversing light bulbs and a separate earth. The canbus switches the screen to camera automatically when you select reverse I pressume.
It might be useful to have the camera working even when reverse is not selected, i am fitting a system with front/ rear cameras with manual/auto record/ playback feature o-lux IR (total darkness) and a 24/7 security recorder with motion detector to protect the car when driving and also when it is parked (a bit like a home security system but for the car)