I use Weather Pak® connectors. They are submersible. Easy to disconnect. Weather Pak can use three pin sizes, 22-18 ga. 16-14 ga. or 12-10 gauge. Black. UV proof nylon. Incredible strength against accidental pull-apart. To disconnect, no tools needed. Use a finger under the tab and pull. Silicone grease makes this even easier.
The ONLY connectors that I consider to not need silicone grease, use GOLD plating. Copper, bronze, brass, tin and silver plating all tarnish meaning oxidize. When things become coated with oxide resistance goes up. And with these materials oxidation keeps thickening. I have seen tinned wire and tinned terminals turn black. Tin oxide.
