1. Electrical Wiring: Copper is extensively used in electrical wiring throughout the vehicle, serving as a conductor for the electrical current needed for various components like lights, ignition systems, and audio systems.

2. Battery Terminals: Copper terminals are commonly found at the ends of battery cables, ensuring proper electrical contact between the battery and the rest of the vehicle's electrical system.

3. Starter Motor: Copper windings are used in the starter motor, creating the necessary electromagnetic field to engage with the engine's flywheel and start the vehicle.

4. Alternator: Copper wires form the windings of the alternator, which is responsible for generating electrical energy and recharging the vehicle's battery.

5. Radiator and Heating System: Copper may be used in some radiators and heating system components due to its excellent thermal conductivity, helping to transfer heat efficiently.

6. Spark Plugs: Copper is a material commonly used in the center electrode of spark plugs, providing a point for the electrical spark to jump and ignite the fuel in the engine's cylinders.

7. Brakes: Copper may be present in brake pads or linings, primarily in semi-metallic brake pad formulations, where copper helps improve the heat dissipation and friction properties.

8. Catalytic Converters: In the catalytic converter, copper can be a component of the catalyst, aiding in the chemical reactions that help reduce harmful emissions from the vehicle's exhaust.

9. Wiring Harnesses: Copper is the primary material for the electrical wires bundled together in wiring harnesses, which distribute electrical power to different parts of the vehicle.

10. Sensors: In some vehicle sensors that measure various parameters such as temperature, pressure, or fuel level, copper may be used as a conductive element.