Forum Discussion
RJsfishin
Mar 24, 2016Explorer
Fulltimer50 wrote:
Red is usually positive and black is usually negative in a DC system. White is not a DC color. You will have to do as has been suggested and trace the whites back to see where they go. Since there are white wires I would also trace the red back as there is no guarantee that the red is positive either.
Where does this wrong info come from ?
Red is usually positive
Black could be negative, but only when used in the same circuit as the red. Otherwise black is almost never negative. And black is always positive when used in the same circuit as white.
And white certainly is a DC color. Almost every dc light fixture, and every cigar liter socket uses black and white wires, in which black is always positive, and white is always neg ground. WHEW !!
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