Tools you'll likely need:
* Phillips head screwdriver (possibly a flathead as well)
* Socket wrench (possibly)
* Possibly a small pry tool (plastic or rubber is best to avoid scratching)
Steps:
1. Preparation: Park your car on a level surface, engage the parking brake, and turn off the engine. It's a good idea to disconnect the negative terminal of your car battery to prevent accidental short circuits.
2. Access the Headlight: Open the hood. The headlight assembly is located behind the front bumper. You'll likely need to access it from the engine compartment.
3. Remove the retaining screws/clips: There are usually several screws or clips holding the headlight assembly in place. These are often located around the perimeter of the assembly where it meets the car's body. Carefully locate and remove these fasteners. They might be Phillips head screws, but some Bonnevilles used plastic clips that just push out or twist and release.
4. Disconnect the electrical connector: Once the screws/clips are removed, there will be a electrical connector attached to the back of the headlight assembly. This connector supplies power to the headlight and turn signal. Gently disconnect this connector by squeezing the locking tabs on the side of the connector and pulling it straight out.
5. Remove the headlight assembly: With the screws/clips and electrical connector removed, gently pull the headlight assembly forward and out of the vehicle. There might be some resistance; be careful not to force it, as you could break something.
6. Installation of the new headlight assembly: Installation is the reverse of removal. First, connect the electrical connector securely, then carefully align the new headlight assembly with the mounting points. Secure it using the screws/clips you removed earlier.
7. Reconnect the battery: Reconnect the negative terminal of the battery.
8. Test the new headlight: Turn on your headlights to ensure the new assembly is working correctly.
Important Considerations:
* Bulb Replacement vs. Assembly Replacement: If only the bulb is burnt out, you don't need to replace the whole assembly. Replacing the bulbs is usually much simpler and cheaper. Determine if you actually need a new assembly or just new bulbs.
* Type of Headlight Assembly: Ensure you purchase the correct headlight assembly for your specific 1994 Pontiac Bonneville model. There can be variations based on trim level (e.g., base model, SE, SSEi).
* Difficulty: While generally straightforward, the difficulty can vary depending on how seized or corroded the fasteners are. If you encounter significant resistance, it's better to consult a mechanic to avoid damaging the vehicle.
* Safety: Always prioritize safety. Work in a well-lit area, use appropriate tools, and be mindful of moving parts.
This is a general guide. Refer to a repair manual specific to your 1994 Pontiac Bonneville for detailed, model-specific instructions and diagrams. Online resources like YouTube might also have videos showing the process for your particular car.
