BERLAT SAE Connector SAE to SAE Polarity Reverse Quick Disconnect Cable Plug Adapter for Solar Panel Battery Power Charger - 5Pack

Works great so we don’t have to swap cables. Good connection.

Simple solution to retain proper wire polarity

Needed these for a number of power equipment that use 12v power. Very useful.

Very handy

if you buy the sae connectors you need a set of these to reverse the connection easily. Totally worth the money.