el7

Hi all,
Need some help. Iam changing my tape/radio 1991 ford escort with a cd player/radio from a 1996 ford escort. One of the connectors is the same and when it is connected I can see the time on the display(looks like everything is working but...) when i connect the speakers I have very low sound even if I max the volume. The cd player gets very hot after some minutes, i think maybe there is something wrong with the voltage. Can someone pls give me the pin-out diagram for these radio players.
Thank you.
Attached is the back of cd player, pin-out.

 

el7

Any idea where can i possibly find these diagrams?