My speakers won't work

If you have amps (look under the rear deck), check them. Some amps have their own fuses. Good luck.

Nope.. I don't have an amp. The cd reciever itself has a built in amp, but that is it. I replaced all the fuses.. and reconnected all the wires.. still no sound..

So I gather from the posts that you've got power going to your head unit (cd receiver), that you've made aboslutely certain that all the wires are connected properly and tightly, and that all the fuses are good.  I see you said a "red wire" had chaffed, which makes me think power line, and that your cd receiver has a "built in amp."  While this wire was scraping the metal, some voltage may have arced into your head unit and fried the circuitry, specifically the circuits in the amplifier portion of the head unit.  The unit may power on, and it may seem to function, but if the amp portion is dead, you'll just get no sound.

If you think the radio is still good and hasn't suffered electrical trauma, then here are a few steps to help isolate the problem.

1. Start at the head unit.  If it turns on and off as it is supposed to, use a multimeter on the speaker leads coming out of the back of the head unit.  Don't have a multimeter?  Go get one today and learn how to use it.  You don't have to start out buying a professional $1500 Fluke DMM - just pick one up for ten bucks a t RadioShack for now.  It's  be your best roubleshooting friend ever, and it will help you to understand why you do many of the things you do.

2. Perform the test in step 1 for each pair of speaker wires on the unit.  If you get voltage coming off of the lines, and the voltage increases as you turn up the volume, then that pair of wire is good and can be reconnected.  By the way, if you see an area or connection that is exposed or has chaffed off some of the wire insulation, see if there is a way to route the wire elsewhere.  If not, consider putting a grommet or a few layers of electrical tape over the wire at the chaff point.

3. Now, if your wires coming into head unit are good, and the outputs of your head unit are good, the problem must be between the head unit and the speakers.  Check each one by using a 1.5V D-size battery.  Strip a little bit off the ends of the speaker wire by the head unit.  Then press the positive side of the wire againts the positive battery terminal and the negative against the negative.  You should hear a soft pop from the speaker.  If you do, the line to the speaker is good - the speaker may still have a torn surround or cracked voice coil, but it is getting voltage.  If you don't hear the soft pop, repeat the process at the speaker itself.  If you hear the pop now, there is a discontinuity in the line between the head unit and the speaker.  If you still don't hear a pop, the speaker is bad - or your battery is dead.  Yeah, this step relies on you having a good D-Cell battery.

4. If none of these steps help, try and dig up another head unit to connect in your car using all existing wire, speakers and fuses.  If the new head unit works, then your old one must be bad.

Hope this helps out some and good luck.