Approximately eight bulb types cover all lamps used in the Fiero. Alternatives exist for many of the bulbs which are improvements over the originals. LED (light emitting diode) replacements are becoming popular for tail lights and turn signals but we are unaware of any that are approved by the DOT (US Department of Transportation). We have seen relacement LEDs that fit a few bulbs of cars other than the Fiero and with time we expect to see some that will fit the Fiero, too.
One location which is suitable for LED replacements is the third brake light in '85-88 Fieros. We are unaware of any aftermarket replacements at this time.
Use of LED lights for turn signals usually requires special flasher units; they are not plug & play.
Bulb Part Number
High & Low Beam Headlamp H6054 (see Note 1) H6054ST H6054CB, high performance halogen H6054XV, blue halogen X6054, halogen, extra bright, long life H6054LL, high intensity, long life Front Turn Signal 2057 or 2057LL (long life) Parking Light 2057 or 2057LL Rear Turn Signal 2057 or 2057LL Stop Light 2057 or 2057LL Tail Light 2057 or 2057LL Backup Light 1156 or 1156LL Automatic Trans Indicator 194 or 194LL (see Note 2) Brake Warning 194 or 194LL ( " " ") Directional Signal Indicator 194 or 194LL ( " " ") Front Side Marker 194 or 194LL ( " " ") High-Beam Indicator 194 or 194LL ( " " ") License Plate 194 or 194LL ( " " ") Rear Side Marker 194 or 194LL ( " " ") Seat Belt Indicator 194 or 194LL ( " " ") "Pontiac" Rear Lights (GT only) 194 or 194LL ( " " ") Ash Tray 70 Dome Light 906 High Mount Stop Light 889 or 906 Instrument Panel - General 168, 37, 194 or 194LL (see Note 3) Courtesy Light (foot well area) 168 Spare Tire area light 168 Trunk/Cargo Light 168 or 561
Note 1:We understand that Levine Auto Parts (http://www.levineautoparts.com/27009headlamp.html) makes a high-brightness headlamp replacement that works well on the Fiero. It is a bit pricey but reputedly is of high quality.
Note 2: We understand that #194 bulbs (2 candle power) can be replaced with #168 bulbs (3 candle power) for a little more brightness. We have not verified this swap.
Note 3: We understand that #194PC (1/2" size) are the #194 bulb with "twist-in" socket which fit the instrument panel behind the speedometer, tach, "check engine", and other warning lights.
Note 4: We understand that Xenon bulb 9732 is a direct fit for the 168 and 194 bulbs. It is a 5 watt bulb and not suitable for all Fiero applications due to heat, but it makes a suitable replacement for the side marker lights, "Pontiac" rear lights, courtesy lights, and cargo area lignt. Due to their extra heat, make sure the bulbs are not too close to anything that would be easily affected. Bulbs are available at lighting stores as well as on-line at seagulllighting.com.