You want to tow a trailer. What must you note regarding the electric cable between the towing vehicle and the trailer?

The combination you selected is correct. Each point is essential for safe towing in accordance with German traffic regulations.

1. The electric coupling devices must not be damaged because they ensure that the electrical connection between the towing vehicle and the trailer is secure. Any damage can lead to malfunctioning lights or signals, which is dangerous.

2. Matching onboard voltage between the towing vehicle and trailer is crucial to prevent electrical issues. If the voltages do not match, it may result in failure of the lights or other electrical systems, endangering safety on the road.

3. Checking the functioning of the lighting systems before starting your journey is necessary to confirm that both the towing vehicle and trailer communicate effectively. This ensures that other road users can see your indicators and brake lights, thus preventing accidents.

Ensuring all three conditions are met enhances safety for you and other road users, aligning with German traffic law requirements. Properly functioning lighting and connections are critical components for safe towing.