Wiring Diagram

hello folks


does anyone out there have the stereo wiring diagram for a 89 telstar ghia auto


ripped the stock ford radio out to find 14 wires, all of which i m unsure of what they do

im i right in thinking its

8 wires for the speakers
2 for the battery
1 for ACC
1 for On
1 for Start
1 for earth
?
thanks for any help