Join Date: Aug 2008
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Determining wire polarity
I am attempting to install a stereo/cd player and wire it into the boats 12 volt system. I want to tap into the wires leading to a lamp that are right next to the stereo, but I can't tell which wire is positive and which is negative. The wires leading to the lamp are not properly color coded. Is there a test to determine which wire is positive and which is negative?
s/v Sabbatical Pearson 365 Hull #32
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