If you’re looking to learn about 5 pin CDI (Capacitive Discharge Ignition) wiring diagrams, you’ve come to the right place. In this article, we’ll go over everything you need to know about 5 pin CDI wiring diagrams, including what they are, how they work, and how to wire them properly.
What is a 5 Pin CDI?
A 5 pin CDI is an electronic ignition module that is used in small engines. It is responsible for igniting the spark plug at the right time, which in turn ignites the fuel in the engine. The CDI does this by storing energy in a capacitor and then releasing it to the ignition coil when the spark is needed.
The 5 pin CDI is the most common type of CDI used in small engines, and it is found in a wide variety of applications, including motorcycles, ATVs, and scooters. It is called a 5 pin CDI because it has 5 pins that connect to various components in the engine.
How Does a 5 Pin CDI Work?
To understand how a 5 pin CDI works, we first need to understand the basic components that make up the CDI. These components include a capacitor, a rectifier, an ignition coil, and a trigger coil.
When the engine is running, the trigger coil generates a small AC voltage that is sent to the CDI. The CDI then rectifies this voltage and stores it in a capacitor. When the CDI receives a signal from the engine’s ignition system, it discharges the capacitor and sends a high voltage signal to the ignition coil. This high voltage signal is then sent to the spark plug, which ignites the fuel in the engine.
Pin Configuration of 5 Pin CDI
The 5 pin CDI has the following pin configuration:
| Pin Number | Function |
|---|---|
| 1 | Trigger |
| 2 | Ground |
| 3 | CDI Power |
| 4 | Ignition Coil Power |
| 5 | Ignition Coil Ground |
How to Wire a 5 Pin CDI
Wiring a 5 pin CDI can be tricky, but with the right instructions, it can be done easily. Here’s a step-by-step guide on how to wire a 5 pin CDI:
Step 1: Wiring the Trigger
The first step is to wire the trigger. The trigger is connected to pin 1 of the CDI. The trigger wire is usually a black wire that comes from the stator.
Step 2: Connecting the Ground
The second step is to connect the ground. The ground wire is connected to pin 2 of the CDI. The ground wire is usually a green wire that connects to the frame of the engine.
Step 3: Connecting the CDI Power
The third step is to connect the CDI power. The CDI power wire is connected to pin 3 of the CDI. The CDI power wire is usually a red wire that connects to the battery or ignition switch.
Step 4: Connecting the Ignition Coil Power
The fourth step is to connect the ignition coil power. The ignition coil power wire is connected to pin 4 of the CDI. The ignition coil power wire is usually a blue wire that connects to the ignition coil.
Step 5: Connecting the Ignition Coil Ground
The fifth step is to connect the ignition coil ground. The ignition coil ground wire is connected to pin 5 of the CDI. The ignition coil ground wire is usually a black wire that connects to the frame of the engine.
FAQ
Q: How do I know if my CDI is bad?
A: There are a few signs that your CDI may be bad, including:
- Engine won’t start
- No spark at the spark plug
- Engine misfires
- Engine stalls
If you’re experiencing any of these issues, it’s a good idea to test your CDI to see if it’s working properly.
Q: Can I use a different type of CDI on my engine?
A: It’s not recommended to use a different type of CDI on your engine. Different types of CDIs have different pin configurations and may not work with your engine. It’s best to stick with the type of CDI that was designed for your engine.
Q: Can I wire a 5 pin CDI to a 4 pin ignition coil?
A: No, you cannot wire a 5 pin CDI to a 4 pin ignition coil. The pin configuration of the CDI and ignition coil must match for them to work properly together.
Q: Can I wire a 5 pin CDI to a 6 pin stator?
A: It depends on the specific type of CDI and stator that you have. In general, it’s best to use a CDI and stator that have the same number of pins to ensure compatibility.
Q: Is it difficult to replace a CDI?
A: It depends on the specific engine and CDI. In some cases, replacing a CDI can be a simple process that involves unplugging the old CDI and plugging in the new one. In other cases, it may be a more complex process that requires special tools and knowledge.
