1. Preparation:
* Disconnect the battery: This is crucial to prevent accidental short circuits. Disconnect the negative (-) terminal first.
* Gather tools: You'll likely need a Phillips head screwdriver, possibly a flathead screwdriver, and possibly some pliers. A small pry tool can be helpful.
* Consult a repair manual: A Chilton's or Haynes repair manual specific to your 1999 Ford E350 is highly recommended. These manuals provide detailed diagrams and instructions specific to your vehicle's year, make, and model, accounting for variations.
2. Accessing the Turn Signal Lever:
* Steering Wheel Removal (Possibly): In some cases, you may need to remove the steering wheel to gain sufficient access. This is a more advanced procedure that requires specialized tools (steering wheel puller) and caution. Consult your repair manual to determine if this is necessary for your specific van.
* Steering Column Cover Removal: You'll need to remove the plastic cover surrounding the steering column. This usually involves removing screws or clips. Again, your repair manual will show the exact location and type of fasteners.
* Wiring Harness and Connector: Once the cover is off, you'll see the turn signal lever itself. Locate the wiring harness connector attached to the lever. Carefully disconnect this connector.
3. Removing the Turn Signal Lever:
* Screws or Clips: The lever is typically secured by screws or clips. These may be located behind the lever or on the sides. Your repair manual will specify their location and how to remove them.
* Pulling the Lever: Once the fasteners are removed, gently pull the lever out of the steering column. There might be some resistance; use gentle but firm force.
4. Installing the New Turn Signal Lever:
* Reverse the Removal Process: Carefully align the new lever and insert it into the steering column.
* Secure the Lever: Replace any screws or clips that held the old lever in place.
* Reconnect the Wiring Harness: Make sure the wiring harness connector is securely attached to the new lever.
* Reassemble: Replace the steering column cover and (if removed) the steering wheel. Ensure everything is properly secured.
5. Testing:
* Reconnect the Battery: Reconnect the positive (+) terminal of the battery.
* Test the Turn Signals: Turn the ignition on and test all turn signal functions (left, right, hazard lights).
Important Considerations:
* Airbag: If you have to remove the steering wheel, exercise extreme caution. The airbag system is potentially dangerous if mishandled. Disconnect the battery and wait several minutes before working near the airbag system. If you're unsure about this step, seek professional help.
* Matching Parts: Ensure you purchase a replacement turn signal lever that is specifically compatible with your 1999 Ford E350 van.
Disclaimer: This is a general guide. Improperly performing this repair could damage your vehicle or cause injury. If you're not comfortable with these steps, it's highly recommended to take your van to a qualified mechanic. Always consult your repair manual for precise instructions and safety precautions specific to your vehicle.