Turn Signal Switch Removal & Replacement

Turn Signal Switch Removal & Replacement

Turn Signal Switch Removal & Replacement Guide

Classic Ford Mustang, Falcon, Fairlane, Comet & F-Series Trucks (1960s–1970s)

If your turn signals are acting up—or just plain dead—it’s often the switch inside the column calling it quits. The good news? This is a very doable repair with basic tools and a little patience. Below is a step-by-step guide to replacing classic Ford turn signal switches, including popular part numbers like C3OZ-13341-B, C5OZ-13341-B, C5OZ-13341-HQ, C9TZ-13341-C, and C9TZ-13341-USA.


Why Replace Your Turn Signal Switch?

A worn or failing turn signal switch can cause:

  • Intermittent or non-functioning signals
  • Brake light issues
  • Horn malfunctions (shared circuit in many models)

Replacing it restores proper electrical function and keeps your classic Ford safe—and road legal.


Tools & Prep

  • Steering wheel puller (TOOL-3600)
  • Small crescent wrench
  • Screwdrivers
  • Dielectric grease
  • Phone (for reference photos—trust me on this one)

First rule: Disconnect the battery ground cable. Always.


Step-by-Step Removal

1. Remove the Turn Signal Lever

Twist the lever out. If it’s stubborn, use a small crescent wrench on the flat spot found on most originals.

2. Remove Horn Button or Ring

Push down and turn left to release.
⚠️ Go slow—there’s a spring underneath that likes to make a break for freedom.

  • Inspect horn ring retainer
  • Remove horn brush if equipped

3. Pull the Steering Wheel

Use your steering wheel puller (TOOL-3600) and set the wheel aside.


4. Document Wiring (Critical Step)

Before disconnecting anything:

  • Take clear photos of wire routing and colors
  • Or write them down if you're going old-school

Some 1965+ models use connectors that may require a release tool.


5. Disconnect Wiring Under Dash

Unplug the turn signal switch harness from beneath the dash.


6. Remove the Turn Signal Switch

Back at the column:

  • Remove the (3) mounting screws ONLY
  • Do NOT remove the two large nuts (unless you enjoy fishing dropped studs out of a column…)

Carefully pull the switch upward while feeding the wires out of the column.


Installation Process

7. Compare Old vs New Switch

Before installing:

  • Match wire colors and count
  • Confirm lever compatibility

8. Install New Switch

  • Feed wires down through the column
  • Seat the switch properly
  • Reinstall the (3) retaining screws

9. Reconnect Wiring

  • Plug into under-dash harness
  • Apply dielectric grease to connections for longevity

10. Reassemble Column

  • Reinstall steering wheel
  • Install horn brush (if applicable)
  • Replace spring, horn button/ring
  • Thread in turn signal lever (don’t over tighten)

Final Check (Moment of Truth)

Reconnect the battery.

Now…

  • No smoke? Good sign.
  • No weird noises? Even better.

Turn the key and test:

  • Turn signals
  • Brake lights
  • Horn

If everything works—you nailed it.
If not… well… time to retrace those wiring steps.


Pro Tips from the Shop Floor

  • Always photograph wiring before disassembly—memory lies, photos don’t
  • Replace worn horn components while you’re in there
  • Use dielectric grease to prevent future corrosion issues
  • Never force the switch or lever during install

Need the Right Turn Signal Switch?

At C&G Ford Parts, we’ve been helping restorers get it right since 1978. Every part we carry is built for proper fitment and factory-correct function—because guessing doesn’t belong in a restoration.

👉 Browse our selection of classic Ford turn signal switches and get your signals back in sync.



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