I did once then I soldered the wires and shrink tubed and wrapped them with electrical tape and grease the pins , knock on wood so far so good ,
Thinking of going with Wago nut connectors that are originally from Europe for wire splices and originally used for military, aerospace, and other industrial applications. They get high ratings on Amazon and can be used for stranded copper wire up to 12 AWG. Easy to use and very secure. You just insert the wire and push the tab. Anybody used them? I'm just not impressed with anything else as in the blue twist cap connectors. I had one just fall off in my hand.
Not rated for exterior use. Made primarily for the lighting industry for making connections in fluorescent fixtures. I've Used tens of thousands of them . Buy direct burial wire nuts loaded with silicone and forget the trouble. Or do as Freddie did..... solder and shrink tube the connections.RgRg