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which wire is positive and which one is negative? Talking about the blue and yellow wires. I'm trying to install some car speakers but don't know what color is positive or negative. :
All You Need to Know About Electrical Wire Color Codes
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All You Need to Know About Electrical Wire Color Codes
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Wire Color Codes: Utilizing Wire Color Code Chart Standards | Creative Safety Supply
Wire Color Codes: Utilizing Wire Color Code Chart Standards | Creative Safety Supply