Brett has posted this a while Back. Watch the video

Amazon has some good deals

https://sharperday.com/products/necs-waterproof-solder-wire-connectors?fbclid=IwAR0yyoip1pWxXyeJCvNu1QIgJo8ELy8yMiLFqC0PuA623imX6fP8bNPjha4