1939 Chevy’s are a popular classic car option, but their outdated 6-volt electrical system can cause issues for those looking to maintain and upgrade their vehicle. By converting to a 12-volt system, car owners can enjoy a more reliable and powerful electrical system that can support modern upgrades like GPS, air conditioning, and modern audio systems. However, the process of converting to a 12-volt system can be daunting. To help make things easier, we’ve created a comprehensive wiring diagram for 1939 Chevy’s that will simplify the process and ensure success.
Why Convert to a 12 Volt Electrical System?
The main reason to convert to a 12-volt electrical system is reliability. 6-volt systems are outdated and can cause problems with starting, charging, and powering any modern upgrades. By converting to a 12-volt system, you can enjoy a more reliable electrical system that can handle the demands of modern technology.
Another reason to convert to a 12-volt system is power. A 12-volt system has more power potential than a 6-volt system, meaning you’ll have a more powerful electrical system overall. This can improve performance and make driving more enjoyable.
Converting to a 12 Volt Electrical System: The Basics
Converting to a 12-volt electrical system requires a few key components, including a 12-volt battery, alternator, starter, voltage regulator, and wiring harness. Once you have these components, you’ll need to follow a wiring diagram to ensure everything is connected properly.
It’s important to note that converting to a 12-volt system requires a bit of mechanical know-how. If you’re not comfortable working on cars or don’t have experience with electrical systems, it’s best to work with a professional to ensure everything is done correctly and safely.
The 12 Volt Conversion Wiring Diagram
Here is a step-by-step guide to converting your 1939 Chevy to a 12-volt electrical system:
| Component | Description |
|---|---|
| Battery | Replace the 6-volt battery with a 12-volt battery. Make sure the battery is securely mounted and properly grounded. |
| Alternator | Replace the generator with a 12-volt alternator. Make sure the alternator is properly wired and grounded. |
| Starter | Replace the 6-volt starter with a 12-volt starter. Make sure the starter is properly wired and grounded. |
| Voltage Regulator | Replace the mechanical voltage regulator with an electronic voltage regulator. Make sure the voltage regulator is properly wired and grounded. |
| Wiring Harness | Replace the old wiring harness with a 12-volt wiring harness. Follow the wiring diagram to ensure everything is properly connected. |
FAQ
Is it safe to convert my 1939 Chevy to a 12-volt system?
Yes, it is safe to convert your 1939 Chevy to a 12-volt system if it is done correctly. It’s important to follow a wiring diagram and work with a professional if you’re not comfortable with electrical systems.
Do I need to upgrade any other components when converting to a 12-volt system?
Yes, you may need to upgrade other components depending on your vehicle and what upgrades you want to make. For example, you may need to upgrade your spark plugs and ignition system to handle the increased power of a 12-volt system.
How much does it cost to convert to a 12-volt system?
The cost of converting to a 12-volt system will vary depending on your vehicle and what components you need to upgrade. Generally, you can expect to spend several hundred dollars on parts and labor.
Can I still use my old 6-volt accessories with a 12-volt system?
It depends on the accessory. Some accessories, like lights, can be used with a 12-volt system with the proper wiring. Other accessories may need to be replaced with 12-volt equivalents.
What are the benefits of a 12-volt system?
The main benefits of a 12-volt system are reliability and power. A 12-volt system is more reliable than a 6-volt system and can support modern upgrades like GPS, air conditioning, and modern audio systems. A 12-volt system also has more power potential than a 6-volt system, improving performance and making driving more enjoyable.
