I just did some soldering on my left side switch pod. The fiberglass plate for the hi/lo switch broke so I just soldered a new switch into my old switch pod. Unfortunately the sheathing on the wires got really hot and melted a bit. I was able to separate the middle (black/yellow) wire from the other two (white and blue) wires. And the covered it in that liquid electrical tape substance that has worked for me in the past. I'm a little worried about the wires crossing since the sheathing is scarce, though.
I'm wondering if I can test it, like hook up the switch pod, battery, and headlight somehow (bike is in boxes) and see if the switch is working properly.