The following schematic shows the 1985 Pontiac Fiero Headrest Speakers wiring diagram. There are two wiring harness for the seat (harness #1) and two wiring harness for adapting harness#1 to factory wiring.

Fiero Headrest Speakers Wiring Diagram

Wiring Color Code:
Brown/Yellow (left speaker)
Dark Blue/Light Blue (right speaker)

Related Post

1997 Chevrolet Malibu Wiring Diagram and Electrical System
Jeep Liberty KJ Audio Amplifier Choke and Relay
2007 Toyota FJ Cruiser Trailer Wire Harness and Diagram
Willys Overland Jeep MB GPW Wiring Diagram
Fiat Coupe Heating and Ventilation System Wiring Diagram