In this video, YouTuber 1 Road demonstrates how make high quality copper lugs (copper terminals) out of copper tubing. It’s cheap and easy.
I did this to improve my 2 gauge wiring for the big 3 upgrade as well as to help my overall charging system to be able to handle dual electric fans replacing the factory mechanical fan…
Forney Lug Crimping Tool: https://amzn.to/2VgzlEF
Soldering Flux: https://amzn.to/2YdgEim