Ok, if you decide to do it, be aware that you are doing it at your own risk.
If you do not know what are you doing or if you really depend on that stereo don't do it.


READ EVERYTHING FIRST. I kept it short so it is better to be safe then sorry.



First you need to take out the thing around the stereo. You need to remove the ashtray and press upwards in the end (where there is the while plastic at the very end).
http://people.umass.edu/glagji/Prizm2001/images/_mg_6742.jpg

TIP: Put something in the place near/below the ashtray because when you take out the stereo you will end up scratching the plastic there.

Then you need to remove the bottow cover of the stereo. No need to remove the aluminium heatsink here
http://people.umass.edu/glagji/Prizm2001/images/_mg_6751.jpg

You can use a flat screwdriver and you should see the following
http://people.umass.edu/glagji/Prizm2001/images/_mg_6752.jpg

What you are really interested in is the CD input cables
http://people.umass.edu/glagji/Prizm2001/images/_mg_6881.jpg

The black cable is the right channel. The thick black cable is the ground and the white cable next to it is the left channel.

After soldering the cables together you can get something like this.
http://people.umass.edu/glagji/Prizm2001/images/_mg_6882.jpg
It is not easy because you have very little space. I shapped the cables as hooks and then I soldered one by one as soon as I could.



You will need 5 cables, 4 to route the CD to a by-pass switch and 1 for the new input ground. I used a Ethernet cable.

TIP: Make sure to pass the cable through the holes in the cover otherwise to close the cover you will need to cut a corner or something similar.

Now for the audio jack i used this ( Model: 274-249) from Radioshack
http://www.radioshack.com/product/index.jsp?productId=2103452&cp=&pg=2&sr=1&origkw=1%2F8+stereo+phone+jack&kw=1%2F8+stereo+phone+jack&parentPage=search
You can probably find one to harvest from some old electronic thing you are about to throw away. I found one for example from an old CD drive after I have already used the jack from Radioshack.

Radioshack has another one that is Model: 274-246 but this one probably wont fit in the plastic button you will see below.

You will need also an DP2T switch, I used Model: 275-626
http://www.radioshack.com/product/index.jsp?productId=2062505&cp=&sr=1&origkw=dpdt+switch&kw=dpdt+switch&parentPage=search

For more info on the channels of the audio jack Wikipedia has this link:
http://en.wikipedia.org/wiki/TRS_connector

Ok, after some soldering I got this
http://people.umass.edu/glagji/Prizm2001/images/_mg_6883.jpg


What do you say??



Keep in mind that the switch is thinner and you will need a smaller hole for the switch. Also the audio jack is short and you will need a slightly larger hole so the base of the audio jack can go in.

Some people might want to install a capacitor to reduce any noise when you connect the cable. For this reason leave the cable from the audio jack to the switch long enough.


At the begging of the photo gallery I have also the blower resistor that I replaced. The fan would work only in the Max setting. It was an easy fix.
You do not need to remove any cover, it is right underneath the passenger side dashboard, just stick your head there and you will see it.



Good Luck!

Feel free to use the info here or the pictures for non-commercial uses. I do not know for how long they will be available in the UMass server (probably 6 months) so If you want to put them somewhere else no problem.