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What is the correct way to remove a 12V generator and replace with one wire alternator on 1964 Ford Galaxie 289 V8?

Replacing a 12V generator with a one-wire alternator on a 1964 Ford Galaxie 289 V8 requires careful planning and execution. Here's a breakdown of the process:

1. Gathering Parts & Tools:

* One-wire alternator: Choose an alternator with the correct amperage output for your needs (consider your electrical system's demands). Make sure it's sized appropriately for your engine's capacity and intended use. A rebuild kit for your original generator may also be an option, depending on your skill level and cost considerations.

* Alternator Mounting Bracket: You'll likely need a new mounting bracket. The generator and alternator have different mounting points. Some aftermarket brackets are available; others may require fabrication.

* Wiring Harness (possibly): A simple one-wire alternator only requires one connection to the battery. However, you may need an adapter harness to connect to your existing wiring or to add a warning light if you want one.

* Wiring: Appropriate gauge wire for the alternator connection and potentially for the warning light.

* Bolts and Nuts: Ensure you have the correct hardware for mounting the alternator and making the electrical connection.

* Wrench Set: Metric and SAE wrenches, sockets, and ratchets.

* Screwdrivers: Phillips and flathead.

* Socket wrench: For removing the generator pulley (if needed).

* Puller (possibly): If the generator pulley is stubborn.

* Test Light or Multimeter: To verify the wiring and alternator function.

* Safety Glasses and Gloves: Protect yourself from potential hazards.

2. Removal of the Generator:

* Disconnect the Battery: This is crucial to prevent electrical shorts and injury.

* Disconnect Wiring: Carefully disconnect all wiring from the generator. Take note of where each wire connects, as you'll need this information for the alternator installation. Label wires if necessary.

* Remove the Generator Mounting Bolts: Carefully remove the bolts securing the generator to its bracket.

* Remove the Generator: Carefully remove the generator from the engine. Note the position of the pulley and any other components relative to the engine.

3. Installation of the Alternator:

* Install the Mounting Bracket (if necessary): If you're using an aftermarket bracket, install it securely according to the manufacturer's instructions.

* Mount the Alternator: Securely mount the alternator to the bracket using the correct bolts and nuts.

* Connect the Alternator: Connect the single wire from the alternator to the positive (+) battery terminal. A fusible link is highly recommended inline between the battery terminal and the alternator.

* Ground: Ensure the alternator case is grounded properly to the engine block, either through the mounting bracket or with an additional ground wire. A clean, secure ground is essential. A badly grounded alternator will not charge properly.

* Optional Warning Light: If you want to retain a charging system warning light, you'll need to adapt the wiring. This typically involves connecting a wire from the alternator's "warning" terminal (if it has one) to the light. Consult a wiring diagram for your specific vehicle.

4. Testing:

* Reconnect the Battery: Carefully reconnect the battery.

* Start the Engine: Start the engine and monitor the alternator's output voltage using a multimeter. It should be between 13.5 and 14.5 volts. If the voltage is too low or not charging, there is a problem in the installation or the alternator itself.

* Test the Warning Light (if applicable): If you connected a warning light, it should briefly illuminate when you start the engine and then go out once the alternator begins charging.

Important Considerations:

* Wiring Diagrams: Obtain a wiring diagram for your 1964 Ford Galaxie to understand the original charging system. This will help you correctly connect the alternator, especially if you're retaining a warning light. These are available online and from parts stores.

* Pulley Alignment: Ensure the alternator pulley aligns correctly with the other drive belts. Misalignment can cause premature belt wear and alternator damage.

* Belt Tension: Check the belt tension after installation. The belt should have a slight deflection when pressed.

* Professional Help: If you're uncomfortable with any aspect of this process, consider seeking the assistance of a qualified mechanic. Incorrect wiring can damage your electrical system.

This detailed process provides a good starting point. However, always refer to specific instructions for your chosen alternator and bracket. Consult your vehicle's service manual for additional guidance. Remember safety is paramount throughout this project.