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<blockquote data-quote="VeDubb" data-source="post: 8465323" data-attributes="member: 668618"><p>I got a new HU for christmas, a Pioneer avh-4100nex. I installed it in a 2014 Ram, and decided to install a backup cam. It&#039;s connected per the instructions, but there&#039;s no picture, only a blank screen or horizontal lines. After double checking all connections (only 3 connections) I decided to test the camera; I brought the camera and a small 12 volt battery in the house and plugged it into a tv with a video-in connection and the cam worked great. I took the cam back out and reconnected everything, the camera comes-on, but&nbsp; again no picture. Then, instead of using the backup light circuit to get the 12 volt power to the cam, I used the battery to power the cam and it worked great (good picture on the HU). For some reason the 12 volts coming from the backup circuit is not sufficient for the camera. I actually connected the battery to the pos. and neg. of the b/u light wires while the camera is connected and it worked, but as soon as I disconnected the battery and only had the 12 volts coming from the the b/u circuit, again there&#039;s no picture. Anybody else run into this? Anybody have any ideas? I might try a different camera. I am a pretty good automotive tech, but I&#039;ve never seen a 12 volt product work with one source of 12 volt power but not another. Help!</p></blockquote><p></p>

[QUOTE="VeDubb, post: 8465323, member: 668618"] I got a new HU for christmas, a Pioneer avh-4100nex. I installed it in a 2014 Ram, and decided to install a backup cam. It's connected per the instructions, but there's no picture, only a blank screen or horizontal lines. After double checking all connections (only 3 connections) I decided to test the camera; I brought the camera and a small 12 volt battery in the house and plugged it into a tv with a video-in connection and the cam worked great. I took the cam back out and reconnected everything, the camera comes-on, but again no picture. Then, instead of using the backup light circuit to get the 12 volt power to the cam, I used the battery to power the cam and it worked great (good picture on the HU). For some reason the 12 volts coming from the backup circuit is not sufficient for the camera. I actually connected the battery to the pos. and neg. of the b/u light wires while the camera is connected and it worked, but as soon as I disconnected the battery and only had the 12 volts coming from the the b/u circuit, again there's no picture. Anybody else run into this? Anybody have any ideas? I might try a different camera. I am a pretty good automotive tech, but I've never seen a 12 volt product work with one source of 12 volt power but not another. Help! [/QUOTE]

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