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<blockquote data-quote="helotaxi" data-source="post: 1566876" data-attributes="member: 550915">It is possible that a shared ground path could cause the problem.&nbsp; The ground isn&#039;t a return path as most people think.&nbsp; It is the supply, electrons are negatively charged and it is the flow of electrons that is measured as current.&nbsp; Using a chassis ground, the electrons will take the path of least resistance through the car body.&nbsp; If you were able to see the current flow through the sheetmetal it would more resemble a river delta than anything else.&nbsp; There would be areas of high flow surounded by areas of near zero flow.&nbsp; If your taillight and your amp are feeding off the same branch of flow, it is entirely possible that the amp is tapping the flow and leaving the light with nothing to work with.I&#039;m assuming that you have LED taillights?&nbsp; The patterns you describe would be what the controller board of the LEDs does when it doesn&#039;t have enough voltage/current to work with.Grounding the amp somewhere else will probably fix the problem.</blockquote>

[QUOTE="helotaxi, post: 1566876, member: 550915"] It is possible that a shared ground path could cause the problem. The ground isn't a return path as most people think. It is the supply, electrons are negatively charged and it is the flow of electrons that is measured as current. Using a chassis ground, the electrons will take the path of least resistance through the car body. If you were able to see the current flow through the sheetmetal it would more resemble a river delta than anything else. There would be areas of high flow surounded by areas of near zero flow. If your taillight and your amp are feeding off the same branch of flow, it is entirely possible that the amp is tapping the flow and leaving the light with nothing to work with. I'm assuming that you have LED taillights? The patterns you describe would be what the controller board of the LEDs does when it doesn't have enough voltage/current to work with. Grounding the amp somewhere else will probably fix the problem. [/QUOTE]

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