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Miscellaneous Automotive
Car Electronics & Appearance
Bizarre Rear Camera Issue
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<blockquote data-quote="lothian" data-source="post: 8805938" data-attributes="member: 676280"><p>[ATTACH=full]41913[/ATTACH]</p><p>Picture is worth a thousand words. Here's the whole shebang, all laid out prior to installation. The answer to your question appears within.</p><p></p><p>The splice I repaired was in the video cable (top image).</p><p></p><p>I connected the red wire from the power cable (middle image) to the red wire from the video cable (top image) to a tap connector attached to the 12v conductor for the car's reverse lamp. I connected the black wire from the power cable (middle image) to a tap connector attached to the ground conductor for the car's reverse lamp. I connected the red wire from the other end of the video cable (top image) to the wire at the headunit labeled "Reverse". This is the extent of the power wiring for this camera, and everything worked as expected prior to the issue with failed splice.</p><p></p><p>Also, I don't think there's a "reverse signal" in this setup. I'm no electronics engineer, but to the eyeballs of this layperson, straight 12vDC juice flows directly into the "Reverse" wire at the headunit from the car's reverse lamp conductor via the red conductor within the video cable (top image). I presume when the headunit senses 12v on this wire (when the car is shifted into reverse) it switches the display to show the camera input signal. Again... it works (the display shows what the camera sees) when we press the "CAM" button on the headunit while the car is in reverse, but won't<em> automatically</em> switch to show the camera like it did before I made the repair.</p></blockquote><p></p>
[QUOTE="lothian, post: 8805938, member: 676280"] [ATTACH type="full" alt="POS Camera.jpg"]41913[/ATTACH] Picture is worth a thousand words. Here's the whole shebang, all laid out prior to installation. The answer to your question appears within. The splice I repaired was in the video cable (top image). I connected the red wire from the power cable (middle image) to the red wire from the video cable (top image) to a tap connector attached to the 12v conductor for the car's reverse lamp. I connected the black wire from the power cable (middle image) to a tap connector attached to the ground conductor for the car's reverse lamp. I connected the red wire from the other end of the video cable (top image) to the wire at the headunit labeled "Reverse". This is the extent of the power wiring for this camera, and everything worked as expected prior to the issue with failed splice. Also, I don't think there's a "reverse signal" in this setup. I'm no electronics engineer, but to the eyeballs of this layperson, straight 12vDC juice flows directly into the "Reverse" wire at the headunit from the car's reverse lamp conductor via the red conductor within the video cable (top image). I presume when the headunit senses 12v on this wire (when the car is shifted into reverse) it switches the display to show the camera input signal. Again... it works (the display shows what the camera sees) when we press the "CAM" button on the headunit while the car is in reverse, but won't[I] automatically[/I] switch to show the camera like it did before I made the repair. [/QUOTE]
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Bizarre Rear Camera Issue
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