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Re: Car Audio on a Cart - Alternatives to Battery Power?
Yes, different rails are rated at different amperages. It would appear that a decent 250W power supply is rated at 13A on the 12V rail. you'd tap into it from the normal molex connectors, I'd think. Not real reason to rip the thing apart that I can think of. 12V would be the yellow wire, BTW. If you need more amperage I suppose you could up the wattage of the PS.
Keep in mind that the computer PS is going to do a poor job of charging a battery since the charge voltage is 13.8V or so. Using a normal battery charger should be fine, since car amps are designed to run off the 13.8V an alternator puts out anyways. I'd say just go with that idea.
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