Unfortunately, as a text-based AI, I am unable to provide visual diagrams. However, I can describe the components and how they are connected in a typical car's starter circuit.

In a car's starter circuit, the components involved are the battery, ignition switch, starter relay/solenoid, starter motor, and usually some form of safety switch.

Here is a step-by-step breakdown of how the starter circuit works:

1. The battery is the primary power source for the starting system. It supplies the electrical energy required to crank the engine.

2. When you turn the car's ignition key or push the start button, it sends a signal to the ignition switch.

3. The ignition switch, located on the steering column or dashboard, transfers the electrical signal to the starter relay/solenoid.

4. The starter relay or solenoid acts as a switch that connects the battery to the starter motor. It receives the electrical signal from the ignition switch and, when activated, allows current to flow from the battery to the starter motor.

5. The starter motor is an electric motor that drives the engine's flywheel to start the combustion process. It is connected to the vehicle's flywheel or flexplate via a small gear called the starter drive.

6. Once the starter relay or solenoid receives the electrical signal, it allows high-amperage current from the battery to flow through it and into the starter motor.

7. The starter motor, powered by the battery's current, then turns the engine's flywheel or flexplate, initiating the engine's rotation.

8. Once the engine starts running, you release the ignition key or button, and the ignition switch returns to its default position, cutting off the electrical signal to the starter relay/solenoid.

9. When the current flow to the starter motor is interrupted, it disengages from the engine's flywheel or flexplate, allowing the engine to run independently.

10. Some vehicles may also feature safety switches, like a clutch or neutral safety switch, which prevent the engine from starting if the clutch is not fully depressed or the transmission is not in neutral, respectively.

It's important to note that the specific wiring and layouts of starter circuits may vary between different car models and manufacturers. If you're encountering a problem with your car's starter circuit, it's recommended to consult a professional mechanic or refer to your vehicle's service manual for accurate information and troubleshooting guidance.