The red lead wire on the back of the alternator has pulled away from somewhere and I need to know where it attaches to. This is on a 1997 Chevy Cavalier 2.4 engine. When I took the bolt off of the red lead wire on the back of the alternator I noticed that it pulled away from somewhere under the exhaust manifold near the starter and I need to know where it goes.

That heavy gauge red wire (called a B+ wire) runs from the positive side of the battery directly to the back of the alternator. On yours, if it goes to the starter, the starter main battery terminal would essentially do the same thing. (both connections are always hot and always come directly from the battery). If you meant that it became disconnected when you said "pulled away", you need to find the wire it disconnected from and re-connect it. If it just came out of a loop that was securing it, you don't necessarily need to find the loop but can secure it with a tie wrap, making sure it stays away from the manifold.
You could actually make a new wire and connect it between the battery (+) terminal and the alternator, using the same gauge wire, but I'd be concerned that the loose end coming from the starter could possibly touch something and cause a direct short. At the least, you should find the loose end and cap it off. The battery cannot charge with the wire disconnected.
Anything I've just written that you don't understand, just ask and I'll clarify it for you.