The output polarity of solar panel chargers of different brands may be different. And the polarity may be reversed when the solar panels connect to the other brand SAE quick connect extension cable, solar charger regulators and DC power kit. These SAE plugs would make it very easy to convert reverse polarity. The SAE reverse polarity adapter is an SAE to SAE connector, it is compatible with battery tender and other brand SAE connector wires. These SAE adapters can be connected to 12V / 24V DC systems. Do not use to make connections exceeding 30A (current). This connector plug would be the easiest way to correct reverse polarity for the SAE to SAE connector.