The Renogy manuals also conflict. The manual for the solar panels say the positive cable is one type of MC4 COnnector (I forget whether its male or female) but the manual on their kits say a different polarity. I took a volt meter to measure the voltage out of the solar panel for mine prior to making connections.
For whatever its worth, even thought the different manuals said the positive cable was either male or female depending on the manual, the sticker on the cable from the solar panel itself had the correct polarity.
This weekend I will be crimping some MC4 cables and I’m still confused from those manuals and I’m going to get on top of my RV and look at the panels to make sure I get it correct.