Product Description
1985–1988 Pontiac Fiero Tachometer Circuit Board – Pre-Calibrated (4-Cyl / V6 / V8 Swap)
Direct-fit tachometer circuit board replacement for 1985–1988 Pontiac Fiero. Ships pre-calibrated for your selected engine option (4-cyl, V6, or V8 swap) and installs with a simple bolt-on procedure—no soldering required.
Features & Benefits
- Pre-calibrated for accurate RPM readings (option selected above)
- Direct replacement for the original Fiero tachometer PCB
- Bolt-on installation with no wiring changes
- Automotive-grade components, Made in the USA
- Built-in diagnostic LEDs for power and signal verification
- Photo-based installation instructions included
Fitment & Compatibility
- 1985–1988 Fiero with 4-cyl or V6 and tachometer & oil pressure gauge cluster
- 1986–1988 Fiero V6 with tachometer-only cluster (no voltage gauge)
- V8 option available for Fieros with compatible engine swaps
- Not compatible with clusters that use a voltage gauge
What’s Included
- Pre-configured tachometer circuit board (4-cyl, V6, or V8 option)
- Mounting hardware
- Printed installation instructions with photos
Frequently Asked Questions
Do I need to calibrate this board?
No. The board ships pre-calibrated for the engine option selected at checkout.
Is soldering required?
No. Installation is bolt-on using the factory mounting points.
What are the diagnostic LEDs for?
Built-in LEDs indicate ignition power and tach signal input, helping with basic troubleshooting.
Will this work with a V8 engine swap?
Yes, a V8-calibrated option is available for compatible engine swaps.
Why won’t this work with a voltage gauge?
Fiero clusters with a voltage gauge use a different tachometer design and require a different circuit board.
