1. Preparation:
* Disconnect the battery: This is crucial to prevent electrical shorts and shocks.
* Gather tools: You'll likely need a variety of screwdrivers (Phillips and possibly flathead), possibly a trim tool or panel pry, and potentially a small socket wrench depending on how the switch is secured. A flashlight will be helpful.
* Consult a shop manual: A 1966 Corvette shop manual (either a reproduction or original) is highly recommended. It will provide detailed diagrams and instructions specific to your year and model. This is crucial to avoid damaging your dash.
2. Accessing the Switch:
* Remove the steering wheel: This is often necessary for complete access to the switch. The steering wheel will likely be held on with a nut on the steering column. *This step requires careful attention and potentially specialized tools*. Mark the position of the steering wheel relative to the column before removal to ensure proper realignment.
* Remove the steering column shroud: This is the plastic or metal cover around the steering column. It's usually secured with screws or clips. The removal method varies depending on your car's specific configuration. The shop manual is your guide here.
* Locate the wiper switch: Once the shroud is off, you should see the wiper switch. It's usually mounted directly to the steering column or a related housing.
3. Removing the Switch:
* Disconnect the wiring harness: Carefully disconnect the electrical connectors attached to the switch. Take pictures or make a detailed diagram before disconnecting to ensure correct reassembly.
* Remove the switch mounting: This is where the variability comes in. The switch might be secured with screws, nuts, clips, or a combination. The shop manual will specify the correct procedure. Be gentle to avoid breaking any plastic tabs or damaging the switch itself.
4. Installing the New Switch:
* Install the new switch: Reverse the removal steps. Ensure the switch is securely mounted.
* Reconnect the wiring harness: Double-check that all connectors are properly seated. Refer to your diagram or photos.
* Reassemble the steering column shroud and steering wheel.
Important Considerations:
* Dash Damage: Be extremely careful when prying or using tools around the dash. These components are often brittle and easily damaged, especially on a classic car.
* Wiring: Take detailed notes or pictures of the wiring connections before disconnecting anything. Incorrect reconnection can cause electrical malfunctions or damage.
* Grounding: Ensure all grounds are properly connected. A poor ground can lead to electrical issues with the wiper system.
Recommendation: If you're not comfortable working on your classic Corvette's electrical system, it's highly recommended to seek the help of a qualified mechanic or restoration specialist familiar with classic cars. Improperly removing or installing the switch can lead to damage to your car and potentially safety hazards. The cost of professional help is far less than the cost of repairing dash damage.
