i believe the guages themselves can be run off of the fiero's wiring. maybe by bypassing all the circuit board will be able to get them working. just need to find out what the speedo signal is that drives the vette speedo and what the signal is that comes off the fiero VSS. im guessing it is going to be 4000 PPM for both. the tach you will probably need a tach filter or whatever is done to get a different tach to work on the fiero's tach signal. like done in other dash n gauge swaps. coolant, battery, fuel, and oil should not require any signal changing setups. then running the idiot light wires to the vettes idiot lights shouldnt be a problem. other things would be pointless to have lit up on the vette gauges that the fiero doesnt have such as the TCS, the SECURITY light(if the vette has one for when someone jacks with your vette and sets the alarm off), the ABS light, skip shift, and the check guages. the check guages could act as your check engine light. all the buttons for the DIC would be pointless to use becuase in order to use it, you would need the entire vettes wiring harness, the engine, the trasmission, ect.... you could always figure something else out to go inplace of that display or to use the buttons for. or just make your own gauge bezel surround. of course there is the dimming issue as well. you could replace the black lights with ultraviolet (blacklight) LEDs and wire a PWM in series with the dimmer switch so that way it can dim the guage cluster.
well thats all i can think of off the top ogf my head here at work. i think i need to get back to working haha. these are the solutions im going to try and look more into when i can afford me a c5 interior to do to my GT. hope this helps!
