How to Replace the Turn Signal Wiring in a 1957 Edsel

Introduction

Replacing the turn signal wiring in a classic car like a 1957 Edsel can be an intimidating task, but with some basic mechanical skills and the right tools, it is very doable. In this guide, I will walk through the complete process of replacing the turn signal wiring step-by-step.

Properly functioning turn signals are critical for safe driving, so replacing old and damaged wiring is an important maintenance task. For a 1957 Edsel, the wiring can be prone to corrosion and cracking over decades of use. Replacing the wires restores full functionality and gives you reliable turn signals once again.

Benefits of Replacing the Turn Signal Wiring

Here are some of the main benefits you'll enjoy after replacing the turn signal wiring in your 1957 Edsel:

• Restored turn signal functionality - New wiring means your left and right turn signals will work properly and reliably when signaling turns or lane changes.

• Brighter, more visible signals - Fresh wiring and bulbs can significantly improve the brightness and visibility of your turn signals.

• Prevent cracked wire issues - Replacing old, cracked wires before they fail completely can prevent being stuck with non-functional turn signals.

• Improve safety - Properly working turn signals keep you and other drivers safe by clearly communicating your maneuvers.

• Enjoy peace of mind - Having fully functional turn signals gives you confidence and peace of mind when driving your classic Edsel.

What You'll Need

Before getting started, you'll need to gather the following tools and parts:

Tools

• Basic hand tools - flathead screwdriver, Phillips screwdriver, socket set, pliers, etc.

• Wire stripper - for removing old wire insulation

• Crimping tool - attaching new wire terminals

• Electrical tape - insulating wire connections

• Test light - verifying electrical connectivity

Parts

• Replacement turn signal wiring kit - specifically for a 1957 Edsel

• New turn signal bulbs

• Wire connectors - butt connectors or other connectors

• Cable ties - for securing new wiring neatly

• Heat shrink tubing - optional, for insulating connections

Step 1: Disconnect the Battery

The first step is to disconnect the negative battery cable to cut power to the turn signal system. This prevents getting shocked while working on the wiring. Use a wrench to loosen the cable clamp and separate it from the negative terminal.

With the battery disconnected, you can now access and remove the turn signal wiring safely.

Step 2: Remove Old Wiring

Next, you need to remove the old turn signal wiring from the vehicle:

• Start by locating the turn signal wiring harness near the steering column. Use a flathead screwdriver to gently pry it off its mounting clips.

• Follow the wiring through its route, releasing it from any additional clips or looms along the firewall and chassis.

• Once you reach the front turn signal housings, remove the bulbs and connectors.

• Carefully pull the old wiring until it is fully disconnected and removed from the vehicle.

With the old wiring removed, now you can install fresh new replacement wiring.

Step 3: Install New Turn Signal Wiring

The next key steps are installing the new replacement turn signal wiring:

• Start by routing the new wiring harness through the same path as the old wiring. Attach it securely along the route using cable ties.

• Feed the wires into the turn signal housings and reconnect the light bulb sockets. Insert fresh bulbs.

• Locate the turn signal switch connector on the harness and plug it into the switch on the steering column.

• Connect the ground wire to a clean grounding point on the vehicle chassis using a screw.

• Connect the power wire to the fuse box turn signal circuit using a butt splice connector.

• Neatly bundle up any excess wiring under the dash using cable ties.

With all connections made, the new wiring should be fully installed.

Step 4: Reconnect Battery and Test

You're now ready to complete the wiring replacement:

• Reconnect the negative battery cable. This restores power to the system.

• Sit in the driver's seat and test the turn signals. Make sure both left and right signals activate correctly from the turn signal lever.

• Also check the exterior lights to confirm they are functioning and synchronizing properly.

• If the lights have any issues, recheck the wiring connections.

Once you've verified proper turn signal operation, the job is complete! Enjoy your fresh turn signal wiring.

Conclusion

While replacing the turn signal wiring in a classic Edsel does take some work, it can be accomplished with common tools and a DIY approach. The key steps are disconnecting the old worn wiring, routing the new replacement wires on the same path, making good connections, and testing operation. Take your time, follow wiring diagrams as needed, and refer to a service manual for any model-specific instructions. With some diligence and safety precautions, you can restore your Edsel's turn signals to full and reliable function.