If interested in doing the unregulated "BEC" thing, the PDF is the document that comes with the switches. If you go to the bottom of it you can see the mod clearly illustrated in a couple of pics. It consists of 2 small dabs of solder. If you have a 6v ignition and want to run LiFe or 5 cell NiMh, you can add a 50 cent Radio shack diode to the positive lead. If you have a newer 8.4v ignition, you'd be good to go without the diode.

Not promoting the practice, but some are saying they're running 6v modules on LiFe without the diode, and having pretty good luck. FYI....