[coreyjon]

Welcome to Chief Delphi first. Second of all, your question is one of caution, and thats good. Don't want to fry anything. That is a very powerful power supply, a bit overkill for the controllor. The input voltage is 12 volts (ideally - as a battery rated at 12 volts will actually have a voltage slightly higher when fully charged, and slightly lower when running out of juice). the power supply is rated at 25 amps (which is a good deal of power). So, if you needed to, you could draw that much current, however, there is no limit to how little current you can draw. Car batteries are often rated for very high amperage, for things like starting your car, but your radio works just fine from the same battery. I can't verify that there is a built in regulator onboard the controllor, although it would make sense. You know you can never assume though. I could be completely wrong, my coffee level is pegged at empty, and it's been a few years since digital electronics - but if it were me, I'de connect it. Just remember to connect first, then turn on power, otherwise you could get a spike in power...and that very well could fry it.