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Headlight Sockets
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03-24-2019, 05:44 PM
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rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,440
Re: Headlight Sockets
Black finish on steel is likely a phosphate treatment. It would still be conductive but more resistant to corrosion than some treatments. Zinc or cadmium plate are generally more common but also more expensive.
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