Here is what I can tell you NOT to do. Don't buy the cheap aviation style connectors from China. The tabs are so small you can't really do any soldering, and the plastic outside breaks off just trying to put them back together. Waist of time an money. I ended up using square 4 pin WeatherPak connectors. Local source, affordable and well made. Be sure to get the right ones for the gauge of wire you're using.