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Message: <blockquote data-quote="eengrms" data-source="post: 187976" data-attributes="member: 547046">If the wire is "silver" color, than it is not copper.  Copper is naturally "copper" color and it would actually cost them money to change the color, or "plate it" (why would they do that??).  The wire you bought is aluminum, and is rated pretty much the same as copper.  The only real differences between aluminum and copper is conductivity vs. length.  If you aren't running the wire 50' then they should both be about the same.  You'd be surprised to see how much wire within your vehicle is aluminum, it's much cheaper and a little softer so it's easier to work with.  Copper is no doubt the best, but aluminum works.  I have seen copper wire cores that are aluminum plated, which does cost less, so that may be what it is too.  The package will tell you.</blockquote>

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