How To Wire A Starter Solenoid In 5 Min (With Diagram)

How To Wire A Starter Solenoid

The starter solenoid is a switch that is used to engage the starter motor in order to start the engine. The solenoid is usually located near the battery and is activated when the key is turned to the “start” position. The starter solenoid uses electrical current from the battery to close the circuit and engage the starter motor.

In a car, the starter solenoid is used to generate the magnetic field needed to turn the starter motor. The starter motor is what starts the engine by rotating the crankshaft. Wiring a starter solenoid is not a difficult task to do. However, it is important to remember to follow the proper safety precautions and to consult with a professional, if you are unsure of anything. With a little time and patience, anyone can wire a starter solenoid and get their car up and running in no time.

If you’re wondering how to wire a starter solenoid, wonder no more! This helpful guide will walk you through the entire process, step by step.

Related • Starter Solenoid Wiring Diagram: 3 Pole Starter & What Wires Go To Starter

How To Wire A Starter Solenoid

Diagram What Wires Go To The Starter Solenoid
Starter Solenoid Wiring Diagram

The starter solenoid is a switch that connects the battery of the vehicle to the starter motor assembly. The solenoid uses the basic principles of electromagnetism in its work. 

Most people don’t know the difference between the starter motor and the solenoid and often use them interchangeably. 

The starter motor is used to crank the engine of the vehicle whereas the solenoid is a small cylindrical component that is responsible for connecting or disconnecting the starter motor assembly and the battery of the vehicle. 

Starter Solenoid Terminals
Starter Solenoid Terminals

A three-pole starter solenoid consists of three terminals, one of them has a small pin-type terminal, called the “S” terminal, and the other two are thick bolt-type terminals. The “S” terminal connects the ignition switch to the starter solenoid. 

The solenoid has two thicker terminals, one of them works as the power source and goes straight to the positive terminal of the battery and the other terminal works as an output terminal and goes to the starter motor assembly. 

Following are the steps to wire the starter solenoid in five minutes. It is very easy. Anyone can wire the starter solenoid in a few minutes.

  • Disconnect the negative terminal of the battery.
  • Place a jack under the vehicle and raise it. You might have to wire the starter solenoid from underneath the vehicle depending on the make and model of your vehicle.
  • Place the starter close to the mounting bracket on the engine of your vehicle. You can also use the jack for your assistance.
  • Connect the positive terminal of the battery to the thick bolt on the solenoid with the help of a ratchet. Similarly, connect the ignition switch wire to the small pin-type terminal just underneath the bigger bolt.
  • Ensure that all the wires are connected properly, and after that, you must mount the starter on the engine. Once you are done mounting you can connect the black wire to the negative terminal of the battery to re-establish the connection.

And Done. You have successfully wired the starter solenoid in a few minutes.

The below video’s explanation is not in English, but you can take an idea from it visually.


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