This is a quick and easy way to power your left gauntlet LED with the accurate slide switch. I suck at soldering and wiring. This is about as complicated as I can get, so if I can do it you can do it. The battery pack fits conveniently inside my flamethrower box. Certainly someone with more experience could figure out a more space saving method of powering the LED. But this is what I went with since it was cheap and easy and available at Radioshack.