As advertised. This one comes with zamp wire (reverse polarity means the positive wire is covered). So if you are using a different brand of solar panel (I have a Renogy system) you will need to use a reverse polarity adapter to safely plug directly into the Zamp wired connection on your RV that most RVs now have. It works. Or you can reverse the polarity on your controller by swapping the wires and screwing them back on. But there's no reason to complicate things. Just plug in a polarity reversal adapter and you're done.
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