Review on 🔌 JoinWin MFG Upgraded Solar Cable to 8mm Adapter for GZ Products - MC4 Compatible (Blue) by Austin Cejudo

The manufacturer contacted me for my review, which I always appreciate, so I wanted to update my comments a bit to be objective. Overall, the adapter is well suited for my purposes. I'm still testing with different panels and will keep updating. Cable polarity does not match product photo. The photo shown shows the positive red wire going to the positive marked MC4 socket and the negative black wire going to the negative marked plug. The version I received has a red wire for the jack, but the jack is marked negative. The same goes for the black negative entering the pin header labeled positive. As long as the wires reflect true polarity, you're fine. 16 gauge wire for 8mm can be a problem if you want to draw a line 10 feet or so. 14 would make more sense.