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post #4 of Old 07-27-2013
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Re: Polarity of LED lights

Originally Posted by budvar View Post
However, when checking, I don't notice any difference when reversing the meter prongs to the red and black wires of the new lights. Supposedly, you get a (minus) - if it's backwards. Should I just go ahead and connect the lights, red/hot, black/ground and try them briefly (the mast will be down). Expensive lights, don't want to burn them out needlessly.

You can't hurt the lights by wiring them backwards but if they aren't connected with the right polarity they won't work.

Apply 12V to the lights and see if they do. If they do note the polarity of the voltage. If not reverse the polarity of the voltage. Mark the wires. Then make sure the polarity is the same when you raise the mast.

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