atx power supply turn on

I am trying to make a PS-ATX-300S computer power supply come on to power a car radio. I only need 2 12V leads and a -12V ground. Any suggestions would be appreciated.

Maybe this will help:

nb

this allows the power supply to come on but the radio will not come on

yellow is +12V, black is ground.

ground the grey wire. (if grounding grey doesn't work, try grounding green instead)

Are you sure you need +12V and -12V, and not +12V and 0V ? If you feed

vic

snipped-for-privacy@gmail.com wrote in news:1152146803.478639.156390 @l70g2000cwa.googlegroups.com:

You sure about that? A car radio needs 12v, thats 12v+ and Ground not 12v-. If you use 12v+ and 12v- you'll have 24v and you'll blow the radio. I think you'll find using the yellow 12v+ and black ground from the ATX drive connectors will give you the 12v you need.

Also the atx supply will provide a lot of amps at the 12v+ but the 12v- is usually rated at less than one amp. try drawing more than that and the atx supply will not like it..