How to replace the ignition coil on a 1968 Ford Mustang GT Fastback (Bullitt)?

Model: 1968 Ford Mustang GT Fastback (Bullitt)

If your 1968 Ford Mustang GT Fastback (Bullitt) is experiencing engine misfiring, poor fuel economy, or difficulty starting, these symptoms could be indicative of a faulty ignition coil. The ignition coil is a crucial component that transforms the battery's low voltage to the high voltage needed to create an electric spark in the spark plugs, igniting the fuel. Here is how to solve this issue by replacing the ignition coil on your classic Mustang.

Step 1: Gather Necessary Tools and Parts

To safely and efficiently replace the ignition coil, you'll need the following tools and parts:

New ignition coil
Wrench set
Screwdrivers (both flathead and Phillips)
Socket set
Dielectric grease (optional but recommended)

Step 2: Safety First

Before starting any work under the hood, ensure the vehicle is parked on a flat surface and the engine is completely cool. Disconnect the negative terminal of the battery (black cable) to avoid any electrical accidents. The battery is usually located in the engine bay, close to the front, on the passenger side.

Step 3: Locate the Ignition Coil

Open the hood and locate the ignition coil. The 1968 Ford Mustang GT Fastback typically has the ignition coil mounted near the front of the engine, close to the distributor. It’s a cylindrical component, usually black or silver, with a wire coming out of each end.

Step 4: Remove the Existing Ignition Coil

Disconnect Wires: Carefully disconnect the high-tension lead (thick wire) from the top of the ignition coil by pulling it off the terminal. There may also be smaller wires attached to the bottom terminals of the coil. Note their positions and disconnect these as well.
Remove Mounting Hardware: Using a wrench or socket set, remove the bolts or screws that secure the ignition coil to its mounting bracket. Place them in a safe spot as you'll need them to install the new coil.

Step 5: Install the New Ignition Coil

Mount the Coil: Position the new ignition coil in place and secure it with the bolts or screws removed previously. Tighten them snugly but be careful not to overtighten.
Reconnect Wires: Reattach the wires to the appropriate terminals on the new coil. Apply a small amount of dielectric grease to the terminals for better connectivity and corrosion prevention.
Reattach High-Tension Lead: Connect the high-tension lead to the top terminal of the new ignition coil, ensuring a firm connection.

Step 6: Reattach Battery and Test

Reconnect the negative terminal of the battery. Turn on the engine to test the new ignition coil. The engine should start more smoothly, and any symptoms of a faulty coil should be resolved.

By following these steps, you should be able to successfully replace the ignition coil on your 1968 Ford Mustang GT Fastback, restoring optimal engine performance and reliability.