Fiero Headlight System Troubleshooting

This is a description of the Fiero headlight systems. I tried to be basic and point out the differences and common problem areas. If in doubt, by all means, refer to the Helms manuals for schematics. Don’t let your car be a “one eye up” Fiero. After all, Fiero means “I am proud”.

image of 84-86 knob image of 87/88 knob First of all, let me make a few basic comments. The Fiero uses two and only two different headlight systems: one for all 1984-1986 Fieros, the other for the 87/88 Fieros. But since some people have modified their cars or for cars made at the end of the model year, some confusion may still arise.

So, here is the simple method of telling the two apart: there is a knob on top of the headlight motor. The picture on the left shows the 84-86 system with the old knob, the right shows the 87/88 system with the newer, tapered knob. The wiring colors are from the 1984 and 1987 Helms manuals, other years may vary (Donations in the form of 1985, 1986 and 1988 Helms manuals are welcome).

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Special Tools For The Fiero

A lot of tasks on the Fiero absolutely require special tools, other times a job is a pain in the butt without the right tool. A lot of tools are available in the aisles of the various parts stores, but which ones are good and which ones are a waste of money? Not all stores carry all parts, and the sales personnel usually is no help at all. Since I’ve accumulated a lot of special tools over the years, I have decided to make this list to present my personal opinion of the usability of the various tools. Your mileage may differ.

Also, this list is not complete, it is only the tools I own and have used, or else I couldn’t give you my opinions on them. I will expand this section as I acquire new tools.

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