Hang on 1 min. Got it right here, takes me time to type.
To install this package in a Fiero with the Performance Sound System, you must perform the following modification to the adapter;
Cut the blue wire (terminal E) in the middle of the adapter harness. Wrap tape around the end that goes to the radio side of the adapter. (This will no longer be used) Bare a small section at the end of the other half of the blue wire. Then bare (do not cut) a small section of the red wire (terminal F) and splice the bared end of the blue wire into the red one. Wrap with electrical tape. (Alternately, you could use a wire tap to avoid baring the red wire. Just make sure to get a good connection.)
Lifted shamelessly from
Is this what you were looking for, or a more complete loom diagram?
Ol' Paint, 88 Base coupe auto.
Turning white on top, like owner.
Leaks a little, like owner.
Doesn't smoke, unlike owner
[This message has been edited by DtheC (edited 12-20-2006).]