You want to hitch a trailer with a maximum authorised mass over 750 kg to your car. What must you ensure in this situation?

Your selected combination is correct, as all three factors are essential for safely hitching a trailer with a maximum authorized mass over 750 kg.

1. The handle of the ball coupling must be visually and mechanically checked to ensure a secure and stable connection, which is crucial for safe towing.
2. The breakaway cable must be properly fitted to prevent the trailer from becoming detached from the vehicle in the event of a disconnect, enhancing road safety.
3. Checking the proper functioning of the trailer’s lighting system is vital since it ensures that the trailer is visible to other road users, reducing the risk of accidents.

According to German traffic regulations, adherence to these practices ensures that both the towing vehicle and trailer operate safely and legally. Failing to comply with any of these checks could lead to accidents and legal repercussions.