Wiring Diagram for a 91 Geo Prizm

Trying to move my old stereo into my girlfriends car so she can have a better apreciation for the money I keep dropping into my car and sound system, but I cannot find a wiring diagram for the radio and it is really starting to piss me off.  Can anybody help out?

Radio Wiring Schematic for a 1991 Geo Prizm ... PLEASE HELP!

Here is the diagram for the car as you can see it is missing the speaker diagram. What I would do is remove the speakers and look at the wire color. That should fill in the missing blanks on the diagram below. The only problem you might have is if there is an external factory amp somewhere in the car. Then the speaker wires would change in color. But I don’t believe the Prizm’s have factory amps. An easy solution would be to go to your local car audio shop and ask for a wiring harness kit for your car. It costs about $10 and takes the guess work out of finding the correct wires.

https://www.the12volt.com/installbay/detail.asp?info=alarm&year=1991-92&make=Geo&model=Prizm&ID=17883&type=Stereo