computer fan for cooling

alright, so I have these 2 fans that were in an old computer and Ive heard they can be used to cool an amp. anyways, how would i go about setting these things up to run? moreover, how could i just test them to see if they still even work? there is no switch or anything, just 2 wires. ive tried to just put the wire ends next to some small batteries (not car ones) and they wouldnt spin but I dont know if it should do sh*t.

if they are 12V they need about 8 just to turn, throw it on 12V to see if it works

Most computer fans are 12 volt fans.  The red lead is, I believe, negative.  To test them touch the leads across your car battery.  If you use them, you will need to use a relay to switch power for them.

or you could try putting them in parellel with your amp.

ravenndude wrote: or you could try putting them in parellel with your amp.

Actually that's not a good idea as they would then stay on all the time.

true ... didn't think of that. since the remote turn on it a steady 12v and only turns on with the Head Unit you caouls put it in // with that and a ground.

Your logic is correct, but most fans draw too much current to run off the remote lead.  You'll end up blowing a fuse in your head unit (or worse, frying the main board).  A relay operated off the remote lead is the only safe way.