125cc motors are commonly used in motorcycles, scooters, and ATVs. Proper wiring is crucial for the motor to function correctly. In this article, we will provide a detailed wiring diagram for a 125cc motor.
Wiring Components
The following components are required for wiring a 125cc motor:
| Component | Description |
|---|---|
| Battery | A 12V battery is required to power the motor. |
| Starter Solenoid | The starter solenoid is responsible for starting the motor. |
| Ignition Coil | The ignition coil is responsible for delivering high voltage to the spark plug. |
| CDI Unit | The CDI unit is responsible for controlling the ignition timing. |
| Rectifier Regulator | The rectifier regulator is responsible for charging the battery and regulating the voltage output. |
| Wiring Harness | The wiring harness connects all the components together. |
Wiring Diagram
Below is the wiring diagram for a 125cc motor:
Battery Connections
The positive (+) terminal of the battery should be connected to the starter solenoid. The negative (-) terminal should be connected to the frame of the motor.
Starter Solenoid Connection
The starter solenoid should be connected to the starter motor and the positive (+) terminal of the battery.
Ignition Coil Connection
The ignition coil should be connected to the CDI unit and the spark plug.
CDI Unit Connection
The CDI unit should be connected to the ignition coil, rectifier regulator, and wiring harness.
Rectifier Regulator Connection
The rectifier regulator should be connected to the battery, CDI unit, and wiring harness.
FAQs
What is a CDI unit?
A CDI unit, or Capacitor Discharge Ignition unit, is an electronic device that controls the ignition timing of the motor.
What is a rectifier regulator?
A rectifier regulator is an electronic device that rectifies and regulates the voltage output from the motor’s stator, which is then used to charge the battery and power the electrical components of the motor.
What is the role of the ignition coil?
The ignition coil is responsible for transforming the low voltage from the battery into high voltage that is used to create a spark at the spark plug, thus igniting the fuel in the motor.
What is the role of the starter solenoid?
The starter solenoid is responsible for engaging the starter motor when the ignition switch is turned on, thus cranking the motor to start it.
What is the role of the wiring harness?
The wiring harness connects all the electrical components of the motor together, allowing them to communicate and function as a whole.
With this wiring diagram and knowledge of the components and connections, you should be able to successfully wire a 125cc motor. Good luck!
