These folks know nothing of what they are talking about.
1. Using pliers, wire cutters, or a hammer, release the pins from the connector.
2. Spread the female sides apart and sand paper the gold or tin plating from the connector. Sand the male sides as well.
3 Forget the di-electric grease either conductive or not. Spray liberally with Flex-Seal, the stuff you can use to make a boat out of a screen door with.
4. Reassemble the connectors together and crimp them together with the pliers. Forget about using molex connectors, just make them all direct.
5. To assure a weather tight connection, wrap with duct-tape for 3 inches either side of the pins being sure to triple wrap the actual connector part so that the wiring looks like a snake swallowed a bowling ball.
6. Done.