* Battery: The starter motor receives electrical power from the battery to operate.
* Ignition Switch: The ignition switch controls the flow of electricity to the starter motor when the key is turned to the "start" position.
* Starter Relay: The starter relay acts as an intermediary, switching the high-current path from the battery to the starter motor when activated by the ignition switch.
* Flywheel: The starter motor engages with the flywheel, which is attached to the crankshaft, to rotate the engine.
* Engine: The starter motor spins the engine to start it.
Here's a visual representation of the connections:
Battery -> Ignition Switch -> Starter Relay -> Starter Motor -> Flywheel -> Engine
Note: The specific wiring and components might vary slightly depending on the year and model of the Vauxhall Astra. However, the fundamental connections remain the same.