Car Stereo in Garage

[Tincup19]

I was recently given two 12 inch subs and an amp. I don't have any desire of putting them in my car so i figured i would turn it into a garage stereo system. I watched a bunch of youtube videos on using a computer power supply unit (psu) as the power source for the amp. I followed the tutorial exactly and before i hooked anything up to the amp i plugged the psu into the wall to make sure it works. the indicator light came on and the fan started spinning. but after unplugging it and hooking up the wires to the amp, yellow to the power terminal with a little jumper wire going from the power terminal to the remote terminal and the black wires to the ground i plug the psu back into the wall but now the indicator light wont come on and the fan doesn't spin. does anyone have any idea what so ever what might be causing this? thank you!

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[keep_hope_alive Premium Member]

a power supply has several output voltages, 5V and 12V, both positive and negative.  you need to make sure you're connecting to a 12V output and not a -12V or 5V output.