Audio upgrades
Audio upgrades are modifications to the Pontiac Fiero sound system, speakers, wiring, radio, amplifier, or related interior electronics.
Audio upgrades are common because many Fieros still have aging factory radios, worn speakers, outdated wiring, or owner-installed equipment from previous decades.
Overview
The Fiero was available with different factory audio configurations, including standard radios and upgraded sound options. Many owners replace or modify the factory audio system to add modern features such as Bluetooth, USB input, improved speakers, amplifiers, or subwoofers.
Audio upgrades should be planned carefully so that wiring, speaker fitment, radio mounting, power supply, grounding, and interior trim are not damaged.
Factory audio system
Factory audio equipment may vary by model year, trim level, and options.
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Radio upgrades
Common radio upgrades include replacing the factory radio with a modern head unit, adding Bluetooth audio, adding auxiliary input, or adapting a later GM radio.
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Speaker upgrades
Speaker replacement is one of the most common Fiero audio upgrades. Speaker size, mounting depth, grille clearance, wiring condition, and interior trim fitment should be checked before installation.
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Subwoofers and amplifiers
Some Fieros were equipped with a factory subwoofer option. Owners may also install aftermarket subwoofers or amplifiers.
Because interior space is limited, amplifier and subwoofer placement should consider ventilation, wiring safety, passenger space, storage space, and serviceability.
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Wiring and electrical considerations
Audio upgrades often require wiring changes. Poor wiring can cause noise, battery drain, blown fuses, poor sound quality, or electrical problems.
Important considerations include:
- Correct fused power supply
- Good ground connections
- Speaker polarity
- Avoiding hacked factory wiring
- Preventing wire chafing
- Avoiding overloaded circuits
- Preserving serviceability
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Interior fitment
Audio upgrades should not damage fragile interior trim, interfere with HVAC controls, block vents, interfere with shifter movement, or prevent access to service panels.
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Common audio topics
- Factory radio
- Speaker replacement
- Subwoofer option
- Radio wiring
- Bluetooth audio
- Amplifier installation
- Battery drain
- Ground loop noise