If you’re trying to upgrade your car’s ignition system, you’ve probably heard of MSD 6A. This is an electronic ignition system that replaces the points and condenser in your car’s distributor. MSD 6A is known for its reliability and performance, and it’s a popular choice among car enthusiasts. However, before you install this system in your car, you need to understand how to wire it correctly. In this article, we’ll give you a step-by-step guide on how to wire MSD 6A and answer some frequently asked questions.
What is MSD 6A?
MSD 6A is an electronic ignition system that uses a capacitor discharge (CD) ignition box to fire the spark plugs. It’s designed to replace the points and condenser in a traditional distributor and provide a more reliable spark for improved performance. The CD ignition box can store a large amount of electrical energy and discharge it quickly, making it ideal for high-performance engines.
How Does MSD 6A Work?
MSD 6A works by receiving inputs from the car’s sensors and switches, such as the crankshaft position sensor and the ignition switch. It then uses this information to control the timing and duration of the spark that ignites the air-fuel mixture in the engine’s cylinders. MSD 6A can provide a more precise spark than the traditional points and condenser system, resulting in improved fuel efficiency and better performance.
To wire MSD 6A in your car, you’ll need to follow the wiring diagram that comes with the system. This diagram shows the connections between the CD ignition box, the distributor, and other components in your car’s ignition system. Here’s how to wire MSD 6A in your car:
Wiring MSD 6A – Step-by-Step Guide
Step 1: Disconnect the Battery
Before you start wiring MSD 6A, you must disconnect the battery to prevent any electrical shocks.
Step 2: Remove the Distributor Cap
Next, you need to remove the distributor cap from your car’s distributor. This will give you access to the distributor’s wiring.
Step 3: Connect MSD 6A to the Distributor
Connect the MSD 6A’s white wire to the distributor’s tachometer output wire. This wire provides the RPM signal to the CD ignition box. Connect the MSD 6A’s red wire to the distributor’s positive (+) wire. This wire provides power to the CD ignition box. Connect the MSD 6A’s black wire to the distributor’s negative (-) wire. This wire provides ground to the CD ignition box.
Step 4: Connect MSD 6A to the Ignition Switch
Connect the MSD 6A’s orange wire to the ignition switch’s switched 12V wire. This wire provides power to the CD ignition box when the key is turned on. Connect the MSD 6A’s black/white wire to the ignition switch’s ground wire.
Step 5: Connect MSD 6A to the Coil
Connect the MSD 6A’s green wire to the positive (+) terminal of the ignition coil. This wire provides the spark signal to the coil. Connect the MSD 6A’s violet wire to the negative (-) terminal of the ignition coil. This wire provides ground to the CD ignition box.
Step 6: Connect the Battery
Reconnect the battery and test the ignition system. MSD 6A should provide a strong and reliable spark.
MSD 6A Wiring Diagram
Here’s a wiring diagram that shows how to wire MSD 6A in your car:
| White Wire | Distributor’s Tachometer Output Wire |
| Red Wire | Distributor’s Positive (+) Wire |
| Black Wire | Distributor’s Negative (-) Wire |
| Orange Wire | Ignition Switch’s Switched 12V Wire |
| Black/White Wire | Ignition Switch’s Ground Wire |
| Green Wire | Ignition Coil’s Positive (+) Terminal |
| Violet Wire | Ignition Coil’s Negative (-) Terminal |
Note that the wiring diagram may vary depending on your car’s make and model. Always consult the instruction manual that comes with MSD 6A before wiring it in your car.
Frequently Asked Questions
Q: What is the difference between MSD 6A and MSD 6AL?
A: MSD 6AL is an advanced version of MSD 6A that offers more features and functions. MSD 6AL can provide a higher voltage spark, has a built-in rev limiter, and can be programmed with a laptop.
Q: Can I install MSD 6A in my car myself?
A: Yes, you can install MSD 6A in your car yourself if you have basic knowledge of car wiring and mechanics. However, if you’re not comfortable with DIY car projects, it’s recommended to hire a professional mechanic to install it for you.
Q: Does MSD 6A work with any type of ignition coil?
A: No, MSD 6A is designed to work with MSD Blaster, Pro Power, and HVC ignition coils. Using other types of ignition coils may damage the CD ignition box or reduce its performance.
Q: How do I know if MSD 6A is working correctly?
A: To test MSD 6A, you can use an ignition tester or a spark plug tester. These tools can show you if MSD 6A is providing a strong and consistent spark. You can also monitor your car’s engine performance and fuel efficiency after installing MSD 6A to see if there are any improvements.
Q: Can MSD 6A cause any harm to my car’s electrical system?
A: No, MSD 6A is designed to work with your car’s existing electrical system without causing any harm. However, if you wire it incorrectly or use incompatible components, it may damage the CD ignition box or other parts of your car’s ignition system. Always follow the manufacturer’s instructions and consult a professional mechanic if you have any doubts.
In conclusion, MSD 6A is a reliable and high-performance electronic ignition system that can improve your car’s engine performance and fuel efficiency. Wiring it correctly is essential to ensure its optimal performance and reliability. By following the step-by-step guide and tips in this article, you can install MSD 6A in your car safely and easily.
