Review on 🔌 LIXINTIAN 10AWG SAE Connector Extension Cable (2Pack) - Quick Disconnect Plug for Automotive & Solar Panel - 30cm/1ft Length by Travis Flores

Notice how the wires change color as you connect them. I'm pretty sure there's nothing like an amazing crossover going on in the plug, but it should be red to red / black to black. Of course I'll check with a tester but I suspect they just make them the same and if you invert the wire color will be reversed. I think you get what you pay for. I hope that the quality of the plug is at least better.