Here's a general outline of the procedure. Specific steps may vary slightly depending on your vehicle's exact configuration. Always consult a repair manual specific to your 1986 Chevrolet Caprice for detailed instructions and diagrams. A Haynes or Chilton manual would be extremely helpful.
Tools You'll Likely Need:
* Socket set (various sizes)
* Ratchet and extensions
* Screwdrivers (Phillips and flathead)
* Wire strippers/crimpers (if replacing wires)
* Pliers
* Pry tool (plastic or metal, to avoid scratching)
* Electrical tape (if necessary)
* New ignition switch
* Possibly a new ignition cylinder (if the old one is damaged)
Steps:
1. Disconnect the negative battery cable. This is paramount to prevent accidental shorts and injury.
2. Remove the steering wheel. This usually involves removing a retaining nut (often located behind the steering wheel's center cap) and then pulling the wheel off the steering column. Be aware that the steering wheel might spring back unexpectedly; take precautions. You may need a steering wheel puller tool for this step.
3. Remove the steering column shroud or lower cover. This typically involves removing screws or bolts securing the plastic cover around the steering column. This will expose the ignition switch.
4. Disconnect the wiring harness. Carefully disconnect the electrical connectors from the old ignition switch. Take pictures or make notes of the wire connections before disconnecting them to ensure proper reassembly. You might need to use a small flathead screwdriver to release the connector clips.
5. Remove the old ignition switch. This usually involves removing screws or a retaining clip holding the switch in place. It might be necessary to gently pry the switch out; use a plastic pry tool to avoid damage.
6. Install the new ignition switch. Carefully align the new ignition switch with the mounting holes and secure it in place using the appropriate screws or retaining clip.
7. Reconnect the wiring harness. Connect the wires to the new ignition switch, ensuring they are in the same positions as they were on the old switch. Refer to your pictures or notes if needed.
8. Reinstall the steering column shroud or lower cover.
9. Reinstall the steering wheel. Make sure the steering wheel is aligned correctly.
10. Reconnect the negative battery cable.
11. Test the ignition switch. Turn the key to verify that the ignition system functions correctly. Check all the accessory circuits as well (headlights, radio, etc.).
Important Considerations:
* Key Matching: If you're replacing the entire ignition cylinder (the part where the key goes), you'll need to ensure you get one that matches your existing keys, or have keys cut to match the new cylinder. This is often done by a locksmith or auto parts store that specializes in key cutting.
* Security: Improperly installed ignition switches can compromise your vehicle's security. Ensure all components are correctly secured and functioning properly.
* Professional Help: If you're uncomfortable performing this repair yourself, take your vehicle to a qualified mechanic. The consequences of incorrect installation could be significant.
This is a general guide. Consult a repair manual specific to your 1986 Chevrolet Caprice for detailed instructions and diagrams before attempting this repair. Improper installation could lead to electrical problems or even damage to your vehicle's electrical system.
