To answer the question for other DIY'ers, to run the equivalent of a Warrior tier saber you'd need a 3AAA battery holder and batteries, a latching switch to turn the saber on/off, and the LED module. You'll end up with your battery positive connecting to one end of the switch, the other end of the switch connected to the positive (red) lead of the LED module, and the negative (black) lead of the LED connected to the negative of the battery.
What you end up with is a simple series circuit where you apply the power of the battery across the LED module. The switch opens the circuit when unlatched and closes it when latched, allowing you to control when the saber is on or off.
That's the electronics end of things, mostly. Just solder the connections and attach the units securely on the inside of the hilt so they don't shake and you should be golden.