PRIMARY · Reported for this vehicle
Headlights
2 owner reports involving the headlights for this model year.
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Replacement Guide / Buick / Regal / 1999 / Lights Aren't Working
1999 Buick Regal
Lights Aren't Working
Components worth investigating when a Buick Regal has lights that aren't working, with owner-report evidence for the 1999 model year.
For the 1999 Buick Regal
Lights Aren't Working
Symptom and component reports
Owner reports for this vehicle describe this symptom and also involve related components. 2 reports describe lighting problems directly.
A dark headlamp or brake light can be a bulb, housing, or wiring. Owner reports involving lights do not prove the assembly failed.
What should I investigate?
Components related to this situation, ranked by validated relationship, then by vehicle-specific owner-report evidence. This is not a diagnosis.
Other components that can be related
Generally associated with this situation, but no vehicle-specific evidence is present for this model year.
PRIMARY · Generally related
Brake lights
Generally associated with this situation, but no vehicle-specific brake lights evidence is present.
Questions that narrow it down
General checks. Answering them does not confirm the failed part on this vehicle.
Worth checking first
- A bulb, fuse, or connector can be the whole job.
- Do not treat a charging complaint as a headlight-housing failure.
Safety
When not to keep driving
- Do not drive at night without working headlights. If brake lights are out, other drivers cannot see you stop — get them working before the next trip.
About the data
Counts come from replacement.guide aggregates for this model year. Component evidence comes from structured complaint categories and reviewed component mentions in complaint summaries. Owner-situation evidence comes from reviewed symptom language in complaint summaries. Reports are signals, not diagnoses.
How to read this page
PRIMARY components are the validated first-line associations for this job. RELATED components can be involved but are ranked after PRIMARY even when they have more reports. A report involving a component does not prove that component caused the problem.