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Message: <blockquote data-quote="trumpet" data-source="post: 8308529" data-attributes="member: 628688">Any DC circuit needs to have every contact point performing well. That means not only do we need a great ground connection close to the equipment, but the grounds under the hood need to be as conductive as possible. Even if you don't replace or supplement the battery ground wires, you may hear a reduction in noise by cleaning the wire terminals and their contact points down to bare shiny metal. A protective layer should be put over the tightened connections to keep oxygen and moisture out. There are specialty products at your auto parts store for this, although you can use spray paint, silicone, or grease.An extra measure to reduce voltage drop is to add a parallel ground cable from the existing amplifier ground point up to the chassis where your primary battery is grounded.</blockquote>

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