![]() just poke around your connections and test the voltage. some of them just have a video, no video, means not in reverse, or it gets that trigger somewhere else like mine does. some use a power signal, hence the relay and camera wires that have an extra wire along with the video. The relay is really if you need a trigger to tell the head unit or video screen when to turn on. ![]() Since I'm using a relay and have it wired the way all the tutorials suggest, would you recommend I use an alternate power source for the camera? The picture is fine when the battery is on (and car in reverse) but as soon as I turn it over, the flickers make it useless. Strange thing is, I am already using the relay - I even bought a second relay in case it was the fault of the first one and It still flickers like crazy when the engine is on. Hi, I've just been searching everywhere for the last 4 hours trying to find a solution since I'm having the exact same problem on my x5. I'm going to say problem solved, plus i can now switch to my camera whenever i want to. Things i can check, the good 'ol 14 volts in my license plate light that i already had to tap into and my LED doesn't use much of. mine has those 2 purple wires behind the head unit, you plug them together if you have a camera, it gets a 'trigger' from somewhere else. i guess older ones have to have it based on signal means the cars in R. ![]() consequently trying to tie it to the other lights in that cluster is the same or less volts so no help there.īut i have no idea why i'd need a relay for that prob. that would explain a lot and it's very hard to test it by myself. Your reverse light is only going to trigger the relay on/off. I measured the voltage to my reverse light after engine started, it only has like 10v max, and yes, after using a relay (like others have mentioned) it worked well. If this is true, the voltage to the reverse might drop below 12v after engine started, in this case relay is needed. ![]() Try this, turn on the car, but without starting the engine, put it to reverse, camera should work (for as long as the car is on). Hooking a DVD player up to the RCA line and seeing if the head unit shows it non stop can let you know if the problem is with the camera. A multimeter is good for checking the power to the camera and making sure its a steady voltage. Just try to limit the conditions of things that could be bad. If it does the same thing as before then hook it up to an external power supply and TV/LCD. You should hook the camera up to an external source like a small TV/LCD and see if it's getting full signal. I ended up cutting the RCA wires and just soldering them now it works 100% of the time. It ended up being the female RCA jack that was wired to the camera had a poor connection and only when it was wet or when it was twisted in 1 absolutely perfect spot it would work. I had the car power it and hooked it up to an external TV so I could see if it was the head unit or not. When I hooked it up to the car it would work 50% of the time but mostly when it was cold and rainy. It was something like $30 on Amazon and worked pretty well when I tested it off the car with a 12volt power supply and a TV. I had weird things happen with my backup camera.
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