HEADLIGHT MOTORS '84-86: Headlight motors in '84-86 Fieros are notorious for failure which is not surprising considering their age and lack of maintenance. Replacements are available from GM but are expensive. Used and rebuilt motors are frequently sold on eBay.
Headlight motors in the '82-86 Firebird are the same as the '84-86 Fiero although they must swap sides to fit the Fiero.
Headlight motor repairs are simple for the shade tree mechanic and parts are available from the vendors listed below.
Rodney
Dickman http://www.rodneydickman.com
The Fiero
Store http://www.fierostore.com
Alan Mooty, 8061 Nicklaus drive,
Orlando, FL 32825 (407) 275-5040
Headlight Motors'87-88: Headlight motors on the '87-88 Fiero have an improved design compared to the earlier years but still fail due to age. Replacements are available from GM but are expensive. Used and rebuilt motors are frequently sold on eBay. Repairs are simple, more so than earlier years. We understand that headlight motors from the following cars will fit the '87-88 Fiero:
'87-92 Firebird (must swap sides to fit in Fiero)
Late '80s Pontiac
Sunbird
Headlight Control Modules: The headlights in the '87-88 Fiero are controled by an electronic module found beneath the left front fender, behind the fender well. The control modules in the '87-92 Firebird are the same as the Fiero.
Headlight Relay, '84-86: This relay is still available from GM (part number 22059694) but can be replaced by the GM power antenna relay (part number 12337964) which can be found in any salvage yard.
Parts to repair '87-88 headlight motors are available from the vendors listed above.
On-line articles to assist with do-it-yourself repair are at:
http://www.geocities.com/MotorCity/Garage/5007/fiero_osg/headlights.html
http://www.fierosails.com/headlights.html