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)

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