Now it's time to get the soldering tools prepped. I got my trusty SA1000 out and red hot. These big wires soak up SO much heat that you must have a really hot iron to maintain the heat so that the solder will saturate the copper. The flux helps clean out the copper wire and allow the solder to get a better grasp of things. The heat gun will shrink the heat shrink tubing for the finish work.