How to wire in a radio?

Hi, i just baught a Chiltens (cant rember exact spelling) manual looking for how to wire in my radio but all i found was 1980-86 mustangs and nothing on the 1990 (the year i have). All i realy need to know is the main power wire, the acc wire, and only one set of speaker wire (preferably the front drivers side speaker.)

Any help would be very much appreciated.
Thanks

Try autozone.com or your local library to get a copy of the wiring diagram.

how about splurging on a 12 dollar harness adapter?
i googled one a while ago, but i can't find it now.

Try getting a harness through chilton, and you will get tech help if needed.